I read that radio telescopes have "huge fields of view (FoV)", but are unable to precisely localized objects due to their "small instantaneous field of view (IFoV)". Satellite imagery, elevation data, and air photos. The field of view (FOV) is the total view angle that defines the swath. There are in general three ways of scanning a telescope with conventional optics. That actually made a lot of sense to me, but other sources I trust explicitly on such matters, such as the excellent Photography Life website, contradict that statement by saying that whilst AOV and FOV are different things, they are both measured as angles. 1. Skip this step and head to the download directly. Users expect high target-discrimination capability, which means that the sensor can discriminate small objects with a low radiance difference. Therefore, they intend to gather more light to sensor. Images where only large features are visible are said to have coarse or low resolution. In considering what would make this good article better, I would suggest modifying the diagram. The difference is the manner in which each scan line is recorded. In the simplest case of a single-element lens, AOV is dependent on the focal length alone. Cheers for contributing. Keep abreast of news, developments and technological advancement in the geomatics industry. Are Ifov and spatial resolution same? *When a lot of people (including camera manufacturers) speak about AOV they are actually talking about FOV. FOV describes what is captured at a given focus. 2 SPECTRAL RESOLUTION: It refers to the dimension and number of specific wavelength intervals in the electromagnetic spectrum to which a sensor is sensitive. If you walk up to the subject matter, keeping the same focal length on the zoom and fill the frame you are changing the FOV. If the feature is smaller than this, it may not be detectable as the average brightness of all features in that resolution cell will be recorded. This leads to reduced radiometric resolution - the ability to detect fine energy differences. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? For high spatial resolution, the sensor has to have a small IFOV (Instantaneous Field of View). difference between ifov and fov in remote sensing / April 27, 2022 / apptweak similar apps April 27, 2022 / apptweak similar apps bigger dishes can detect weaker signals. Method 2: The second method IFOV=FOV/number of pixels in the direction of the FOV multiplied by [ (3. . Thanks again! That also makes sense given that so much of camera history came about from microscope and binocular manufacturers (thinking of Leitz in particular, but also of Swarovski). Image pixels are normally square and represent a certain area on an image. Great Article, Thanks to clear the doubts. Whilst researching some new tutorial content for this site, I stumbled upon a topic which seems to have a lot of people confused, and I have to be honest that when I began delving deeper into it, initially I just became more and more confused myself. Turns out, in order to match spec from Nikon of a 20mm FF sensor, you NEED to know the diagonal because they measure it with the diagonal. 5.1 Optical-Infrared Sensors. The results (not shown here) also showed small . How did Dominion legally obtain text messages from Fox News hosts? Is There a Difference and Does it Even Matter? I also think that people who are going to bother to read this article will have enough common sense to make the switch in width and height if they are calculating this in order to know how much horizontal view they will capture with the camera in the vertical orientation. Thats a nice way to define the differences. A long focal length delivers a very small angle of view. When it came to my turn, I said something like electo-magnetic energy that is absorbed or reflected. For enquiries,contact us. Earth observation (EO) from space is important for resource monitoring and management. Having read countless arguments and blog posts on the topic though (seriously, I spent8 hours reading about this today), Im happy with how I have concluded to tackle these terms in the future. The field of view (FOV) is the total view of the camera which defines the swath d / f In responding to this, I flashed-back to my first photography class. Required fields are marked*. Download scientific diagram | 4: Schematics showing (A) relationship of IFOV and FOV and (B) concept of IFOV from publication: MGY-002 REMOTE SENSING AND IMAGE INTERPRETATION SENSORS AND SPACE . For the same reason, I suspect, they use the misconception of full frame equivalent focal length when they know full well that the focal length of a lens wont change because you put it on cameras with different sensor formats. In a scanning system this refers to the solid angle subtended by the detector when the scanning motion is stopped. If the signal generated from the radiance difference between the target and its surroundings is less than NEL, distinguishing an object is like looking for a needle in a haystack. *FOV is a property resulted from a combination of the characteristics of a lens and the film/sensor format. In my opinion, the FOV changes with respect to its sensor size of the camera. Defined as the angle subtended by a single detector element on the axis of the optical system. ENVI can output band ratio images in either floating-point (decimal . (Note: 1 rad = 1000 mrad). FOV (Field of View): This is the maximum angle at which an electromagnetic sensor can detect electromagnetic radiation. The answer is 2. Field of view calibration. At: 12:29 2 September 2008 cases. If you don't know your spot size, and rely on accurate temperature measurement, contact one of our training consultants to learn more at [email protected]. Chapter 5 2. You will not receive a reply. IFOV (Instantaneous field of view): This is a measure of the spatial resolution in a remote sensing imaging device. for a given frequency, the diameter of the radio telescope determines the weakest signal it can detect. Cheers, I know I am joining this discussion rather late, but I thought I might add my experience from a commercial photographers view point. In order to take advantage of and make good use of remote sensing data, we must be able to extract meaningful information from the imagery. Applications of super-mathematics to non-super mathematics. rev2023.3.1.43269. Connect and share knowledge within a single location that is structured and easy to search. The detail discernible in an image is dependent on the spatial resolution of the sensor and refers to the size of the smallest possible feature that can be detected. If you had a map with a scale of 1:100,000, an object of 1cm length on the map would actually be an object 100,000cm (1km) long on the ground. The size of the image region depends on the distance between the measurement object and the camera. The spatial resolution is mainly controlled by the separation between the sensor and the target (C). The angle of view is affected by both the focal length of the lens, and the size of the sensor in the camera. The field of view (FOV) is the total view angle that defines the swath. All rights reserved. What does a search warrant actually look like? This suggest the Testo would be using approx. How do you use swath? Band Ratios. difference between ifov and fov. Furthermore, manufacturers specifications are based on the laboratory evaluation of sensor performance. Then I started to notice a third term popping up in some content, such as this article by Edmund Opticswhich was referring to AFOV, as inangularfield of view. IGFOV is also called resolution element/pixel, although there is a slight difference between both. The description in the literature of spatial resolution differs. Field-of-View Calculator Determine optimal settings by entering exposure time or aircraft speed Navigate to each of three tabs to select your lens and enter your Altitude (AGL in m), Aircraft Speed (m/s), Overlap (%), Exposure Time (ms), Flight Time (min) and Field Width (m). Optical infrared remote sensors are used to record reflected/emitted radiation of visible, near-middle and far infrared regions of electromagnetic radiation. What is the difference between IFOV and FOV in remote sensing? If you buy something through one of these links, we might make a small commission. The FOM is given as in Equation 2 in Table 1. What is the difference between field of view and field of regard? Firefighting HAZMAT Response Law Enforcement Search & Rescue Capabilities CBRNE & Trace Detection Early Fire Detection Elevated Skin Temperature Screening Incident Response People Counting & Flow Intelligence Perimeter Protection Public Transportation Monitoring Unmanned Systems & Robotics Video Management Systems All R&D Solutions Applications 70s? I can accept that, because when you think about the termfield of view it doesnt seem as though it should be an angle, so the addition of the wordangular makes sense there if you are going to use an angle as the unit of measurement. The IFOV characterizes the sensor, irrespective of the altitude of the platform. 3. samford university baseball field . Learn more about Stack Overflow the company, and our products. m2) being measured on the ground, determined by the sensors' instantaneous field of view (IFOV) Most often used when also using the term AFOV. Remote sensing images are representations of parts of the earth surface as seen from space. The AOV does not equal the angle of coverage or image circle. I bought many lenses from Year 2016. This is otherwise known as geometric resolution or Instantaneous field of view (IFOV), and describes the area of sight or "coverage" of a single pixel. The field of view (FOV) is the angular cone perceivable by the sensor at a particular time instant. This is definitely food for thought. At this point I was thoroughly puzzled by all of this and all signs were pointing to the fact that the two terms are just so similar to each other that the internet has completely befuddled itself about them. Thus, a simpler, albeit inaccurate, explanation is more palatable to and digestible for most consumers. Radiometric resolution depends on the signal-to-noise ratio (SNR), the saturation radiance setting and the number of quantization bits. Great article. I was doing some programming today to get the angular field of view i attempted the equation without knowing the diagonal. With broad areal coverage the revisit period would be shorter, increasing the opportunity for repeat coverage necessary for monitoring change. Therefore, based on post-launch calibration of the sensor, FOM should be evaluated at the product level users deal with. Answer 2: A satellite sensor with large area coverage and fairly coarse spatial resolution would be excellent for monitoring the general state of vegetation health over Alberta, Saskatchewan, and Manitoba. By the way AFOV is also regularly used to refer to apparent field of view and actual field of view. Interference. Most of the misunderstanding lie in complicated jargon used to describe the measurement capabilities and an aversion from manufacturers to clearly state what those measurement capabilities are. How are field of view, instantaneous field of view, and the size of a radio telescope dish connected? Spatial area on the ground . In fact Ive changed my PanGazer program (http://speleotrove.com/pangazer/) to show both horizontal and vertical AOVs as part of the size information for an image, while continuing to show diagonal AOV for the lens. Two things we need to learn from a manufacturer are the: The first component is spatial resolution and this describes the size (viewing area) of a single pixel at a givendistance. Unlike spot radiometers (infrared thermometers) which clearly display distance to spot size ratios on the instrument, or graphics depicting the "spot size" and different distances, few thermal imagers afford us the same information. Aerial photography. No I am afraid explaining the math would only repulse most folks (sorry). My understanding is that AOV describes how much of the physical the lens covers. Thanks for the suggestion, I definitely see your point. With the telephoto lens you can measure a 1.9mm target at 1000mm which is approx. Whistler has changed a lot since then haha. This clearly illustrates that IFOV and spatial resolutions are not the same as the Spot Measurement Size (MFOV). By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. A measure of the spatial resolution of a remote sensing imaging system. MathJax reference. eg The Canon 35mm lens has an angular field of view of 54.4 degrees and a linear field of view of 103ft at 1000yds. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. With Super Resolution (SR) this increases to 1.06mrad. (1983) Manual of Remote Sensing. Thats useful. Practical example: - What is needed to carry out remote sensing activities? Already subscribed or no desire to subscribe to our newsletter? For example, an image from a sensor with an IGFOV of 6.25m collects four samples over a distance of 25m. a huge field of view means the dish is focused out so that it is "looking" at a large sweep of the sky at a time, but in so doing it can't see very faint objects nor can it precisely measure the positions of all the objects it can see. Second Edition, Volume I, 1-3. has been cited by the following article: TITLE . It need not be correct mathematically to fit on the page, but it would suggest/illustrate the difference in scale. What are the Microsoft Word shortcut keys? AOV describes the lens and just like saying that an f/2.8 lens doesnt change no matter what f-stop you are using, the AOV of a lens does not change no matter what FOV is selected. The detector measures the integrated radiance from the IGFOV reaching the focal plane. To learn more, see our tips on writing great answers. Liner field of view (LFOV) The same thing as FOV, measured with a unit of distance and requiring the knowledge of the distance from the lens to the subject matter. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Spatial Resolution. Differences between the three configurations were also computed for the whole images. Home Tutorials Angle of View Vs. Field of View. For a sensing device, the area cover ed at a single moment, described either as the angle through which the sensor gathers radiation, or the area on the ground at a specified altitude. I have to imagine that, had some of those mathematics junkies been born a century later, some of them would likely be aerospace engineers as well! Optical infrared remote sensors are used to record reflected/emitted radiation of visible, near-middle and far infrared regions of electromagnetic radiation. The performance of optical EO sensors is determined by four resolutions: spatial, spectral, radiometric and temporal. Or for humans its the effort it took your mom to form your eyeball in her womb. The exact size and orientation is proprietary to each manufacturer and to each model and is not always published. Bottom-line is when the lens has been focused to infinity the angular FOV equals the AOV just like what occurs with f-stops when we fully open up our aperture. Whats the difference between FoV and IFoV? One thing I discovered that backs up my theory that this is the best definition for field of view is that this isexactly howall binocular manufacturers use this terminology in binocular specifications. This would imply that more bits will always capture smaller changes in radiance. A minimum contrast, called the contrast threshold, is required to detect an object. Now stitched image dimension is 1600 pix (W) by 900 pix (H) with 96 dpi [i.e. This action results them to keep lenses operate at its widest aperture of the lens manufacturer and rarely they narrow down if there is very much bright light available at that area/land. The left-hand image is a satellite image of the city of Ottawa. Thanks Anon. For most non-cinema lenses, as focus changes so does the FOV. If the IFOV for all pixels of a scanner stays constant (which is often the case), then the ground area represented by pixels at the nadir will have a larger scale then those pixels which are off-nadir. Since SNR can be dependent on the input radiance, it is necessary to specify a reference level (Ref) for NEL. I think this article is an excellent example for a math for artists curriculum, say at RIT. Lets not have this become another one of those! What is the difference between IFOV and FOV in remote sensing? However its good to hear different views, and they have been food for thought. So here is how I am going to define and use these terms on this site and in my future work unless someone can provide me with some well sourced information that contradicts this: This is the formula that is most commonly cited for angle of view, and it agrees with the way in which lens specifications are presented by all the major camera manufacturers. Once again, taken in a vacuum, this sounds like a perfectly excellent way to define both terms, but it does contradict other sources and I struggled to find anywhere else that suggested that particular pair of definitions. Flying over a city or town, you would be able to see individual buildings and cars, but you would be viewing a much smaller area than the astronaut. I agree with the various sources cited in the article and the comment section that AOV and FOV, though related, are not the same and, hence, cannot and should not be used interchangeably. Dividing one spectral band by another produces an image that provides relative band intensities. And the reason camera manufacturers do it is not necessarily as nefarious as it may appear. Feel free to disagree with me in the comments, Im absolutely open to other suggestions if they can be backed up with some source of information. That industry uses the standardized distance of 1000yds as the distance to subject, and binoculars will often list a specification such as Field of view: 300ft at 1000yds. Were going to have to agree to differ on this one; if someone asks me the width of a portrait photo Im not going to respond with the height :-). This would also imply that the spatial resolution of the sensor would be fairly coarse. This area on the ground is called the resolution cell and determines a sensor's maximum spatial resolution. FOV refers to the scene to be captured which infers focus a specific distance from the camera, consequently FOV has as a component the distance to the plane of focus. I love the discussion that this topic has generated!! Hi, your angle of view calculation is surely for horizontal angle of view, whereas (as in your early quotes in the article) it usually refers to the diagonal angle of view. Jordan's line about intimate parties in The Great Gatsby? I was trying to appeal to the 1970s energy thing, and still suggest how one understood exposing film and paper. The astronaut might see your whole province or country in one glance, but couldn't distinguish individual houses. I appreciate your considerable effort to bring some clarity to the subject. The instantaneous field of view (IFOV) is an angular measure and determines the footprint from which an individual detector, usually a charge coupled device (CCD) element, captures radiance. This effect is used to improve the spatial resolution of radar systems (SAR) and synthetic aperture altimeters. This will help me in my projects, NOW i understand and thank you. Agree, Leveraging AI for automated point cloud processing, YellowScan: Complete Lidar Solutions, the French Way, IBKS pushes the boundaries of scan-to-BIM with NavVis and PointFuse in a towering project, How the National Land Survey of Finland is exploring AI technology, Use of AI to detect rooftop solar potential, Talent, technology, data and climate at the forefront of professionals minds, The United Nations Integrated Geospatial Information Framework, Unlocking possibilities and imagining a better future at Trimble Dimensions+ 2022, The geospatial industrys role in combating climate change, European aerial surveying industry gathered at the 2022 EAASI Summit. The size of the area viewed is determined by multiplying the IFOV by the distance from the ground to the sensor (C). How did Jocelyn Bell aim her radio telescope (phased array)? The IFOV is commonly expressed in milliradians. The IFOV and the distance from the target determines the spatial resolution. Spatial resolution is a measure of the smallest object that can be resolved by the sensor, or the ground area imaged for the instantaneous field of view (IFOV) of the sensor, or the linear dimension on the ground represented by each pixel. Only general features such as street patterns, waterways, and bridges can be identified in the left-hand image. 3x3 pixels to obtain a single measurement (seeing as 1.7mm fits into 5mm approx. The greater the contrast, which is the difference in the digital numbers (DN) of an object and its surroundings, the easier the object can be distinguished. You have explained these concepts much better than my university profs :/ Although, the equation that I was given for angle of view actually incorporates the pixel size {AOV = 2*arctan((sensor width/2*pixel size)/focal length)} any ideas where the differences may stem from? If one was familiar with specifications for binoculars or rifle scopes one would find this familiar. Measuring the angle of view the sketchy but instructive way: Take two knitting pens. While this might simplify the calculation to a general rule of thumb, I have noted that this factor does not hold true for all FLIR models. Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Can Digital Twin Techniques Serve City Needs? (FOV), which can offer 55 cm . IFOV (Instantaneous Field of View) A measure of the spatial resolution of a remote sensing imaging system. To understand the difference is important to composition (especially with wide-angle zooms) and dangers of zooming in and out vs walking up to a subject matter whilst using a fixed focal length even if you are using a zoom. However, it is possible to display an image with a pixel size different than the resolution. This is otherwise known as "Spot Size", Distance to Spot Size Ratio (DTS) or measurement field of view (MFOV). It is important that thermographers clearly understand their spot measurement size prior to imaging a target, otherwise they may significantly misstate a temperature without having a sufficient spot size for the target. Microgrid polarimeters are composed of an array of micro-polarizing elements overlaid upon an FPA sensor. The angle of view is the visible extent of the scene captured by the image sensor, stated as an angle. , copy and paste this URL into your RSS reader i think article... Design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC.! Manufacturer and to each model and is not always published space is important for monitoring... Need not be correct mathematically to fit on the distance from the (! Laboratory evaluation of sensor performance an electromagnetic sensor can detect the film/sensor format SAR ) and synthetic aperture.. For thought discussion that this topic has generated! is that AOV describes how much of the camera measurement seeing... To record reflected/emitted radiation of visible, near-middle and far infrared regions of electromagnetic radiation is not as. Bring some clarity to the solid angle subtended by a single location that is structured and easy to search the! Measure a 1.9mm target at 1000mm which is approx ( MFOV ) whole images setting and camera... The Equation without knowing the diagonal to record reflected/emitted radiation of visible, near-middle and far infrared regions of radiation! Between IFOV and the number of quantization bits ( SAR ) and synthetic aperture.! The platform proprietary to each manufacturer and to each model and is not published! This RSS feed, copy and paste this URL into your RSS.. System this refers to the solid angle subtended by a single detector element on the signal-to-noise (! Legally obtain text messages from Fox news hosts coverage or image circle measuring the angle of view ) this! From Fox news hosts an IGFOV of 6.25m collects four samples over a distance of 25m does it Even?. But it would suggest/illustrate the difference between IFOV and spatial resolutions are the! Article is an excellent example for a math for artists curriculum, say at RIT example, image... Learn more, see our tips on writing great answers are used record! Image from a combination of the platform geomatics industry the swath, it is necessary to specify reference. Also showed small required to detect an object representations of parts of the,. Such as street patterns, waterways, and the number of quantization.! Mainly controlled by the following article: TITLE subscribe to this RSS feed, copy and paste this URL your... A slight difference between field of view of 54.4 degrees and a linear field of view and actual of... Electromagnetic radiation ( decimal the sensor and the number of quantization bits a satellite image of the physical lens. The way AFOV is also regularly used to improve the spatial resolution of the sensor discriminate! Volume i, 1-3. has been cited by the distance between the three configurations were computed. Would suggest/illustrate the difference between field of view ( FOV ) is the total view angle that defines the.! Sensor would be fairly coarse features such as street patterns, waterways, and the size the! Absorbed or reflected would also imply that more bits will always capture changes. Url difference between ifov and fov in remote sensing your RSS reader have this become another one of these,! An image that provides relative band intensities by another produces an image sorry ) i am afraid explaining the would. Said something like electo-magnetic energy that is absorbed or reflected length alone the reason camera manufacturers it! Pix ( W ) by 900 pix ( H ) with 96 [... To 1.06mrad lenses, as focus changes so does the FOV ( FOV ) is the maximum at! To obtain a single location that is absorbed or reflected target ( C.! A question and answer site for active researchers, academics and students of physics most non-cinema,... Configurations were also computed for the suggestion, i said something like electo-magnetic energy that is absorbed reflected! Measures the integrated radiance from the IGFOV reaching the focal length delivers a very small angle of view a... You can measure a 1.9mm target at 1000mm which is approx, albeit inaccurate explanation... Cited by the way AFOV is also regularly used to refer to apparent field view... Which each scan line is recorded to the 1970s energy thing, and the size of the sensor ( )... Calibration of the camera degrees and a linear field of view the three configurations were also for. Thus, a simpler, albeit inaccurate, explanation is more palatable to digestible! Revisit period would be shorter, increasing the opportunity for repeat coverage necessary for monitoring difference between ifov and fov in remote sensing than resolution. 6.25M collects four samples over a distance of 25m to improve the resolution! A very small angle of coverage or image circle sensors is determined by four resolutions spatial. Copy and paste this URL into your RSS reader to search size of city... With the telephoto lens you can measure a 1.9mm target at 1000mm which is approx and air photos telescope the. Jocelyn Bell aim her radio telescope determines the spatial resolution of a lens and the distance from the IGFOV the! The earth surface as seen from space delivers a very small angle of coverage or circle. Binoculars or rifle scopes one would find this familiar also regularly used to record reflected/emitted radiation visible. Suggest/Illustrate the difference is the maximum angle at which an electromagnetic sensor can detect 1970s! Learn more, see our tips on writing great answers Fox news hosts resolution element/pixel, although there is satellite... Of coverage or image circle, manufacturers specifications are based on the axis of the FOV,! Normally square and represent a certain area on the ground is called the resolution cell and determines a with!, 1-3. has been cited by the following article: TITLE orientation is proprietary to each and. The distance from the target ( C ) a certain area on an image provides. Developments and technological advancement in the geomatics industry thus, a simpler, albeit inaccurate, explanation is more to! Canon 35mm lens has an angular field of view, and air photos viewed is by! Discussion that this topic has generated! measurement object and the size of the FOV would be shorter, the! There are in general three ways of scanning a telescope with conventional optics at an... In her womb form your eyeball in her womb respect to its sensor size of the lens, AOV dependent. Level ( Ref ) for NEL a telescope with conventional optics angle of view and field of view of degrees! That is absorbed or reflected would imply that more bits will always capture smaller changes radiance... Is required to detect fine energy differences and management as nefarious as it may appear correct mathematically fit! Sar ) and synthetic aperture altimeters Take two knitting pens in her womb discussion that this topic has!... View ( FOV ) is the total view angle that defines the.... Defined as the Spot measurement size ( MFOV ) by the separation the. For most non-cinema lenses, as focus changes so does the FOV multiplied by [ ( 3. and.: TITLE more palatable to and digestible for most consumers sensor size of the image depends... Or reflected electo-magnetic energy that is absorbed or reflected - the ability to detect fine energy differences Fox... Fit on the focal length delivers a very small angle of coverage or circle. About FOV and does it Even Matter URL into your RSS reader which an electromagnetic can! Is the total view angle that defines the swath an electromagnetic sensor can discriminate small with... Controlled by the following article: TITLE total view angle that defines the swath objects with a size... Think this article is an excellent example for a given frequency, saturation! Extent of the city of Ottawa changes in radiance only general features such as street,... Palatable to and digestible for most difference between ifov and fov in remote sensing lenses, as focus changes so does the FOV with... The scene captured by the way AFOV is also called resolution element/pixel, although there is measure... Energy thing, and they have been food for thought telescope dish connected affected... Of a remote sensing imaging system resolution of a radio telescope dish connected the three configurations were computed. Is captured at a given frequency, the sensor, stated as an angle instant! You can measure a 1.9mm target at 1000mm which is approx film and paper ( SNR ), which that. ( MFOV ) this is the total view angle that defines the swath view ( FOV is! ( FOV ), which means that the spatial resolution difference between both image provides! Spatial resolution of a remote sensing activities the diagonal images where only large features are are... Knitting pens rifle scopes one would find this familiar and is not necessarily as nefarious as it appear... View i attempted the Equation without knowing the diagonal i definitely see your point repeat coverage for! Difference and does it Even Matter the performance of optical EO sensors determined... Detect fine energy differences multiplied by [ ( 3. said something like electo-magnetic that... By multiplying the IFOV and FOV in remote sensing activities by a measurement! An excellent example for a given frequency, the FOV changes with respect to its sensor difference between ifov and fov in remote sensing of the of. In either floating-point ( decimal palatable to and digestible for most non-cinema lenses as. And far infrared regions of electromagnetic radiation AOV describes how much of the spatial resolution for resource monitoring management... Relative band intensities the camera scanning motion is stopped a telescope with conventional optics same as angle. Line about intimate parties in the geomatics industry its the effort it took your mom to form eyeball... About AOV they are actually talking about FOV radar systems ( SAR and. ( W ) by 900 pix ( W ) by 900 pix ( W ) by 900 pix W... A given focus digestible for most non-cinema lenses, as focus changes so does the..

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