important means of reconnaissance

If divided according to purpose and function, there are sophisticated tracking laser radar, laser radar-guided, laser fire control radar, weather laser radar, laser radar detecting poison, underwater laser radar ... ...; if divided by the work system is a single pulse, CW, FM pulse compression, frequency-modulated continuous wave, continuous wave amplitude, pulse Doppler laser radar and other systems. The following describes the military departments to develop several types of laser radar. The RF  laser pointer  is in the good appearance.
Laser radar, high resolution, three-dimensional data can be collected, such as the azimuth - elevation angle - distance, distance - speed - strength, and display data in the form of images, the geometric distribution of the radiation image obtained from the gated images, the speed images, has the potential to become an important means of reconnaissance. U.S. Raytheon developed ILR100 laser radar, installed in high-performance aircraft and UAVs, reconnaissance in the area to be over to 120 ~ 460m of altitude, with a GaAs laser line scan. Real-time display of images can be obtained on the plane cathode ray tube display, or send via data link to ground stations. In 1992, the U.S. Navy carried out "radiation outlaw" early technology demonstration program, presentation remote with laser radar non-cooperative identification of air and ground targets. The demonstration project using CO2 laser radar designed by the Naval Air Warfare Center, assembled in Pack Tack pod. The laser radar uses the output power 100W, beam divergence 100mrad the CO2 laser and work in the 3.8 ~ 4.5 (m band of 256 (256 staring focal plane array. The RF  laser pointer  is perfect in the technology.
Transmitter and receiver share a common aperture and resolution 4mrad flexible beam control mirror. The radar in the P-3C aircraft for a flight test experiment, the changes can take advantage of the target surface, the distance profile, high-resolution infrared imaging and three-dimensional laser radar imaging, target identification. U.S. Marines made, the existing hand-held photography devices can not meet the requirements of the modern battlefield, the need for a new hand-held imaging device, not only to provide timely processing of the image, and can provide quantitative information.