Intra -pulse frequency coding signal parameter measurement method based on digital channelization

Abstract

The invention discloses an intra -pulse frequency coding signal parameter measurement method based on digital channelization, which can solve a problem that real-time parameter measurement currently is hard to be executed for a frequency coding signal. Specifically, the method comprises the following steps: acquiring a radar echo signal, performing digital channelization and obtaining instantaneous frequency information of corresponding signal of each channel; performing differentiation for the instantaneous frequency information to obtain an instantaneous frequency differential point, and performing over threshold detection for the instantaneous frequency differential point to obtain an over threshold point; according to the over threshold point, judging whether the radar echo signal is the frequency coding signal; if the radar echo signal is the frequency coding signal, taking pulse width of each pulse in each channel, and performing statistical analysis for all the pulse width to obtain code element width of the frequency coding signal; and according to the code element width and a position of a frequency hopping point, dividing the instantaneous frequency information, obtainingeach code element position, performing statistics on the number of code elements and the code element frequency, and obtaining a frequency coding sequence through ranking the code element frequency.

Description

technical field [0001] The invention relates to the technical field of radar signal reconnaissance, in particular to a method for measuring parameters of intrapulse frequency coded signals based on digital channelization. Background technique [0002] Wideband intra-pulse frequency-coded signals are more and more widely used in the field of radar due to their good distance and speed resolution performance. Due to the emergence of frequency-coded signals, the form of radar signals is becoming more and more complicated. Traditional pulse parameter measurement has been The information contained in the radar pulse cannot be accurately expressed. For the intra-pulse frequency coded signal, in addition to the general pulse description word, the number of symbols, symbol frequency and code sequence are also important pulse characteristic parameters. At present, the relevant research on the measurement of pulse parameters of broadband frequency-coded signals mainly uses time-frequen...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method for measuring parameters of intra-pulse frequency-coded signals based on digital channelization, which can solve the current problem that it is difficult to measure real-time parameters of frequency-coded signals

Images