A fpga coherence test method based on ethernet data transmission

Abstract

The invention discloses an FPGA coherence testing method based on Ethernet data transmission, which solves the problems of inaccurate coherence evaluation and low debugging efficiency. In this method, the digital original echo matrix is ​​firstly obtained through the FPGA signal processing module, and the original echo matrix is ​​processed by pulse pressure to obtain the echo pulse pressure matrix. The effective echo pulse pressure matrix is ​​then transmitted to the debugging computer by the Ethernet card, and the debugging computer performs coherent accumulation processing on the echo pulse pressure matrix, and finally extracts the peak point and amplitude of the echo accumulation matrix Threshold comparison to complete coherence evaluation. This method effectively solves the problem of poor accuracy of coherence judgment based on single PRT amplitude stability in traditional methods, has high debugging efficiency, and is suitable for engineering applications.

Description

technical field [0001] The invention relates to the technical field of FPGA module coherence testing, in particular to an FPGA coherence testing method based on Ethernet data transmission. Background technique [0002] Coherence is very important for coherent radar, and will directly affect key indicators such as radar power and Doppler resolution. Poor coherence will lead to a decrease in the peak energy of the signal echo, and even cause echo splitting, resulting in false targets and seriously affecting radar performance. Therefore, whether the FPGA module in the signal processor can correctly evaluate the coherent performance of the received echo to ensure the correct implementation of subsequent signal processing is of great significance in the application of this system radar. [0003] The traditional FPGA module evaluates the coherence method of receiving echoes: connect the debugging computer and the FPGA module through an emulator, open the debugging environment sof...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a FPGA coherence test method based on Ethernet data transmission, to solve the problems of inaccurate coherence evaluation and low debugging efficiency