Ethernet data transmission-based FPGA coherence test method

Abstract

The invention discloses an Ethernet data transmission-based FPGA coherence test method, and aims at solving the problem that the coherence assessment is incorrect and the debugging efficiency is low.According to the method, a digital original echo matrix is firstly obtained through an FPGA signal processing module and pulse pressure processing is carried out on the original echo matrix to obtainan echo pulse pressure matrix; interception is carried out on the matrix to intercept the pulse width and only keep the effective wave gate so as to obtain an effective echo pulse pressure matrix; theecho pulse pressure matrix is transmitted to a debugging computer via an Ethernet card; the debugging computer carries out coherent integration processing on the echo pulse pressure matrix; and finally a peak value point of an obtained echo accumulation matrix is compared with an amplitude threshold to complete the coherence assessment. The method is capable of effectively solving the problem that the traditional methods are bad in correctness as coherence judgement is carried out according to single-PRT amplitude stability, and is high in debugging efficiency and suitable for engineering application.

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