Implementation of 1-bit Image Correlator on the Space Solar Telescope

2-D image correlation tracking is a key factor for the Main Optical Telescope (MOT)on the Space Solar Telescope (SST) to reach its 0.1 "spatial resolution.In order to realize fast image correlation, 1-bit correlation arithmetic is proposed, and the hardware design of 1-bit correlator based on DSP and FPGA is given. Only 0.33ms is needed to realize a 32×32 image correlation algorithm on XCV800 FPGA chip with 20M_Hz clock. The FPGA resource consumption is only 1/9 that of FFT-based (12-bit data)correlator.