Research On The Technique Of Ground Moving Target Detecting On Spaceborne SAR

This paper mainly analyze and study about the imaging algorithm of the Synthetic aperture radar and ground moving target indication on the geometry model and echo model of the space-borne SAR. Then we bring forward a technique named STAP for multi-channels antenna on space-borne SAR to find a smart and effective method to detect and imaging the ground moving target through the space-borne SAR.At the first, we analyze the principle of the space-borne SAR, and then form a space-geometry model and stop-go-stop model and echo model of the it base on the traditional SAR and the relation between the satellite and the earth. After that, we study the imaging algorithm of the traditional SAR, mostly discuss the principal, approach and flow of the Range-Doppler technique. Then we set a model to study the echo character of the ground moving target. Thus, we can analyze the effect to the imaging because of its moving and several method for imaging. Of the most importance, we bring forward a technique named STAP for multi-channels antenna on space-borne SAR. In this part, we study the STAP technique to eliminate ground clutter on the time domain and the frequency domain, and detect the moving target by the STAP for multi-channels antenna on space-borne SAR. Simulation result proves the validity.