A radar pulse cross-channel fusion detection device and detection method thereof

Abstract

The invention discloses a radar pulse cross-channel fusion detecting device and method. The device comprises a digital channelized module, a cross-channel fusion module and a double-threshold pulse detection module; the digital channelized module uses a group of band pass filters of the same performance for input radar signals, and the input radar signals are divided into sub-band signals; the cross-channel fusion module removes false signals in channel boundaries of the sub-band signals, residual noise channels are rejected, the sub-band signals are fused according to the disordered channel numbers, it is ensured that cross-channel signals are output in the single channel, a complete pulse signal is formed in one channel, and a signal amplitude set S'ij in which S' represents the signal amplitude, i represents the ith channel and j represents the jth sampling point is obtained; and the double-threshold pulse detection module ensures that the completed pulse signal is detected via a double-threshold detection algorithm. The detecting device and method can be used to detect the broadband complex radar pulse signals of low signal to noise ratio.

Description

technical field [0001] The invention relates to the technical field of radar pulse signal reconnaissance and interception in electronic reconnaissance, in particular to a radar pulse cross-channel fusion detection device and a radar pulse cross-channel fusion detection method of the detection device. Background technique [0002] The key to electronic warfare in the 21st century is whether to obtain the information of the enemy's electronic equipment, that is, to intercept and analyze the enemy's radar signal. Modern radars generally use pulse signals to detect targets. Only when pulse signals are accurately detected can parameters such as amplitude, frequency, pulse width, and azimuth be extracted from pulses, which is the key to winning electronic warfare. When the signal-to-noise ratio is relatively high, the pulse signal can be detected more accurately according to the difference between the signal pulse amplitude and the noise amplitude; but when the signal-to-noise rat...

AI Technical Summary

Problems solved by technology

When the signal-to-noise ratio is relatively high, the pulse signal can be detected more accurately according to the difference between the signal pulse amplitude and the noise amplitude; but when the signal-to-noise ratio is relatively low, the signal is often submerged in the noise, and it is difficult to effectively detect the pulse signal. Pulse signals are detected, and the detection of radar signals with complex waveforms is more difficult

Channelized receivers can improve the detection sensitivity of the system, but at the same time, it will also bring about cross-channel problems for broadband signals, resulting in the splitting of a single signal into multiple channel signals

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