A typical radar technology includes emitting radio waves, receiving their reflection, and using this information to generate data. Imaging radar has been used to map the Earth, other planets, asteroids, other celestial objects and to categorize targets for military systems.Īn imaging radar is a kind of radar equipment which can be used for imaging. Through recent improvements of the techniques, radar imaging is getting more accurate. Generally they take advantage of the Doppler effect caused by the rotation or other motion of the object and by the changing view of the object brought about by the relative motion between the object and the back-scatter that is perceived by the radar of the object (typically, a plane) flying over the earth. Several techniques have evolved to do this. The registered electromagnetic scattering is then mapped onto a two-dimensional plane, with points with a higher reflectivity getting assigned usually a brighter color, thus creating an image. a landscape) by furthermore registering the intensity of the reflected signal to determine the amount of scattering. Imaging radar on the other hand attempts to form an image of one object (e.g. The traditional application of radar is to display the position and motion of typically highly reflective objects (such as aircraft or ships) by sending out a radiowave signal, and then detecting the direction and delay of the reflected signal. Each pixel in the radar image represents the radar backscatter for that area on the ground: brighter areas represent high backscatter, darker areas represents low backscatter. ĭigital radar images are composed of many dots. The radar moves along a flight path and the area illuminated by the radar, or footprint, is moved along the surface in a swath, building the image as it does so. In a radar image, one can see only the energy that was reflected back towards the radar antenna. It uses an antenna and digital computer storage to record its images. Imaging radar provides its light to illuminate an area on the ground and take a picture at radio wavelengths. Imaging radar is an application of radar which is used to create two-dimensional images, typically of landscapes. Lava flows at the summit crater appear in shades of green and brown, while vegetation zones appear as areas of purple, green and yellow on the volcano's flanks.

The city of Santa Cruz de Tenerife is visible as the purple and white area on the lower right edge of the island. A SAR radar image acquired by the SIR-C/X-SAR radar on board the Space Shuttle Endeavour shows the Teide volcano.

Ia doppler weather radar in motion