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To solve the problem that the hardware overhead of the linear frequency modulated (LFM) pulse compression is large when realized in frequency domain, the time domain implementation method was used in this paper. A 64th-order distributed matched filter is designed for the LFM signal of two targets 20 meters away. The filter was implemented in pipeline-liked parallel competition structure, and the lookup table was built to replace the multiplication by using ROM macro-module of FPGA, which improved the operating speed while reduced the hardware overhead. The logic circuit of the filter was designed and integrated in FPGA device EP2C35F672C8. The simulated results indicate that the filter consumes 2268 logic cells, 1573 registers and 27K bytes memory resources.