Detection and Store Technique of Radar Echoes in Bi- and Multistatic SAR

In SAR imaging system, the high-speed data acquisition and bulky data storage are needed. Because of the limitation of hardware, only the available echoes can be stored. In bi- and multi-static SAR system the receiver can´t know the signal sequence of the transmitter. So the position of available echoes must be detected in the receiver. In this paper, a method of detecting the position of available echoes is presented in the integrity PRI, and a high-speed data acquisition and bulky data storage system is designed. By means of this system, the data of the available echoes can be detected and stored in SATA disk with FAT32 file system. The analysis and experiment results show the system can detect and store the available echoes effectively