Pulsed detection threshold computation module

Abstract

The invention discloses a pulsed detection threshold computation module, comprising a noise decorrelation module, a noise direct current elimination module, a noise wild value elimination module, a noise mean square root module, a pulsed preprocessing module, a pulsed elimination module, a noise mean value module and a threshold output module which are connected in sequence, wherein a video pulse signal with noise is respectively input to the noise decorrelation module, the noise direct current elimination module, the pulsed preprocessing module and the pulsed elimination module; the noise decorrelation module, the noise direct current removing module, the noise wild value elimination module and the noise mean square root module are connected in sequence; the noise mean square root module is respectively output to the noise wild value elimination module, the pulsed elimination module and the threshold output module; and the pulsed preprocessing module, the pulsed elimination module, the noise mean value module and the threshold output module are connected in sequence. The pulsed detection threshold computation module of the invention can calculate characteristic value mean value and variance at real time, dynamically and high precisely, acquires pulsed detection optimum threshold according to preset false-alarm demand to realize optimum interception of the pulsed signal, and is convenient to be realized in programmable devices.

Description

technical field [0001] The invention relates to a pulse detection threshold calculation module, which belongs to the technical field of radar pulse signal reconnaissance and interception devices. Background technique [0002] Radar countermeasures are tactics or techniques to obtain information about enemy radars and weapon systems, and to destroy or disrupt the normal operation of enemy radars or weapon systems. Radar countermeasures are characterized by wide frequency band, instantaneous signal detection, signal parameter measurement and high-speed signal processing. In fact, it is to quickly intercept and analyze the radar target signal in a large noise environment. Signal interception is a prerequisite for subsequent signal analysis and processing. No matter what form of signal receiver is used, signal interception ultimately needs to determine a threshold value according to certain criteria, judge the existence of the signal according to this limit value, obtain radar...

AI Technical Summary

Problems solved by technology

In this process, an excessively high threshold reduces the probability of interception or shortens the detection distance, while an excessively low threshold increases the probability of receiver false alarms.

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