A Real-Time UAV INSAR Raw Signal Simulator For HWIL Simulation System

In this paper, an FPGA based UAV INSAR raw signal simulator is designed to address high computational complexity. It is based on a time domain raw signal generation algorithm and can compute in real time. This signal simulator is designed for Hardware-in-the-loop (HWIL) UAV INSAR simulation which can be used for UAV operator training and system verification. MultiFPGAs are used in this simulator with optimisation methods to improve FPGA resource costs, including a modified non-restoring algorithm for slant range computing, as well as pipelined FFT and IFFT processors for a fast convolution method.