Post-processing Method of the Push-To-Talk (PTT) Synchronization Scheme for Distributed SAR

Abstract:
Distributed synthetic aperture radar (SAR) is affected by some factors, especially clock synchronization. Recently, an innovative Push-To-Talk (PTT) scheme was put forward to solve the common clock synchronization problem. Here, a post-processing method for the PTT scheme is proposed. In the method, an accurate model is deduced to compensate for the phase errors caused by the time and frequency deviations of clocks. Then, the influence of some factors on the model accuracy is analyzed. Finally, some simulations are conducted, and the results indicate that the post-processing method is effective, and the PTT scheme has application prospects in distributed SAR missions.