The difference between airborne radar and spaceborne radar

In general, the changes of platform position and motion state, such as speed, pitch, roll, yaw or terrain fluctuation, will affect airborne radar and lead to image point displacement.

Generally, the reason that affects airborne radar is that the curvature of the earth's surface is 1, and the position of the image point has moved by two pixels, which is related to the unequal width of the ground and the position of the point below the satellite.

At the altitude of the aircraft, the airborne radar system must image at a wide range of incident angles, which may be as high as 60 or 70 degrees, in order to achieve a relatively wide strip (50-70 kilometers), resulting in perspective contraction, overlap and shadow. However, space-borne radar avoids this problem because of its height (small incident angle).

Although the airborne radar has the above problems, it is flexible and can be observed anytime and anywhere (as long as the observation conditions permit). The space-borne radar is not so flexible, but it can observe a large area and stable observation geometry in a relatively short time.

Airborne radar is easily influenced by speed and weather, while spaceborne radar has little influence.

But the spaceborne radar is affected by the rotation of the earth and the curvature of the earth.