![]() Because mid-wave infrared (MWIR) and long wave infrared (LWIR) technologies measure radiation inherent to the object and require no external light source, they also are referred to as thermal imaging methods. This FPA allowed researchers to look at two infrared (IR) planes at the same time. In 2003, researchers at the United States Army Research Laboratory and the Federal Laboratory Collaborative Technology Alliance reported a dual band multispectral imaging focal plane array (FPA). Multispectral imaging measures light emission and is often used in detecting or tracking military targets. Hyperspectral imaging is a special case of spectral imaging where often hundreds of contiguous spectral bands are available. Multispectral imaging measures light in a small number (typically 3 to 15) of spectral bands. Multispectral imaging has also found use in document and painting analysis. Early space-based imaging platforms incorporated multispectral imaging technology to map details of the Earth related to coastal boundaries, vegetation, and landforms. It was originally developed for military target identification and reconnaissance. It can allow extraction of additional information the human eye fails to capture with its visible receptors for red, green and blue. The wavelengths may be separated by filters or detected with the use of instruments that are sensitive to particular wavelengths, including light from frequencies beyond the visible light range, i.e. Multispectral imaging captures image data within specific wavelength ranges across the electromagnetic spectrum. The bright yellow patches in other parts of the image are hollows. Video by SDO simultaneously showing sections of the Sun at various wavelengths Multispectral image of part of the Mississippi River obtained by combining three images acquired at different nominal wavelengths (800nm/infrared, 645nm/red, and 525nm/green) by Apollo 9 in 1969 Multispectral image of Bek crater and its ray system on the surface of Mercury, acquired by MESSENGER, combining images at wavelengths of 996, 748, 433 nm. Not to be confused with spectral analysis. Please consult your local distributor for details."Multispectral analysis" redirects here. This service is not available in some countries. The DJI Smart Agricultural Platform will be supported in Q2 of 2023. Do not install the DJI Cellular module when using a multispectral camera to capture data, in order to avoid blocking the intensity sensor.Ħ. Please consult your local distributor for details. Please pay attention to Return to Home prompts on the DJI Pilot 2 app during flight.ĥ. ![]() Data was measured using a DJI Mavic 3M flying at a constant speed of 36 kph at sea level in a windless environment until 0% power remained. Specific test conditions: In a sunny environment without wind, the orthographic flight aerial photography is obtained with a flight speed of 15 m/s, a flight altitude of 217 m, a ground sampling distance (GSD) of 5.73 cm for visible and 10 cm for multispectral, a fore-and-aft overlap rate of 70%, and a side overlap rate of 60%.Ĥ. ![]() Please pay attention to return prompts in the DJI Pilot 2 app during flight.ģ. The above data are the furthest communication distances for one-way, non-return flights under each standard. The SRRC standard is adopted in mainland China, and the furthest transmission distance is 8 km. The 15km transmission distance can only be achieved under the FCC standard when measured in an outdoor environment without interference. Common sources of electromagnetic interference include high-voltage power lines, high-voltage transmission stations, radar stations, cell phone base stations, broadcast towers, Wi-Fi hotspots, routers, and Bluetooth devices.Ģ. Be aware of flight safety when flying near sources of electromagnetic interference. The vision system may not work properly in poor light conditions. When the GNSS signal is weak, fly the aircraft in environments with good lighting and visibility. Otherwise, the vision positioning system may not work properly. DO NOT fly close to reflective surfaces, such as water or snow. DO NOT take off from moving objects, such as cars and ships. DO NOT fly the aircraft in environments where the temperature is below -10° C (14° F) or above 40° C (104° F). DO NOT fly in areas that are 6,000 meters or higher above sea level. DO NOT fly in severe weather conditions, such as in strong winds (wind speeds of 12 m/s or more), snow, rain, or lightning.
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