Bistatic Synthetic Aperture Radar Timing Synchronization Based on DSSS

Timing synchronization is one of the key techniques for bistatic synthetic aperture radar (BiSAR).This paper addresses the timing synchronization methods for BiSAR systems. One-way timing configuration is proposed first, which is based on direct spread spectrum sequence acquisition and tracking techniques. The synchronization performance is analysis and a enhanced DLL method for fine timing alignment is studied. Considering additional information about transmitter and receiver distance is necessary, an alternative method is put forward which uses two-way PN links. At least the same timing performance will be gained using this configuration