Abstract: With the improving capability of the space-borne SAR systems，signal identification using conventional parameter measurement techniques is difficult to satisfy the demand of Electronic Intelligence systems. Intrapulse minute features analysis of pulse signals have already become an important trend of electronic intelligence development．In order to improve the parameter precision and the detection probability of radar pulse signal in the condition of a low SNR, a Gabor representation detection and analysis algorithm is put forward. It can be used to detect the radar pulse signal and estimate its parameter. The Gabor representation of SAR signal can be computed for a given synthesis window, such as Gaussian window. Then, Intrapulse minute features analysis can be achieved using Gabor representation of SAR pulse signal. Because of the Intrapulse minute features analysis，we can acquire the parameter of the enemy’s radar system accurately，and can deduce the purpose of the SAR effectively．In order to prove the effectiveness of the arithmetic, a lot of simulations with MATLAB have been done for validating the arithmetic．The experiment shows that the arithmetic is effective and the result can provide precious technology information for the next processing．