Impulse type through-wall radar antenna ringing suppression method based on deconvolution

Abstract

The invention discloses an impulse type through-wall radar antenna ringing suppression method based on deconvolution, and the method comprises the steps: S1, obtaining an antenna impulse response function, converting the antenna impulse response function into a frequency domain form, and pre-storing the frequency domain form in a radar processor; S2, if the radar is a multi-channel radar, performing channel correction on each channel error in the echo, or if the radar is a single-channel radar, mitting the step; S3, converting an echo FFT after channel correction into a frequency domain; S4, multiplying the echo signal in the frequency domain by the inverse function of the antenna impulse response function to realize deconvolution ringing suppression; S5, converting the signal into a timedomain, wherein the ringing effect in the signal is eliminated. The method has the advantages that the application range is wide, the antenna end signal ringing suppression can be realized, the radarrange resolution is improved, and the like.

Description

technical field [0001] The invention mainly relates to the technical field, in particular to a method for suppressing ringing of an impulse-type through-wall radar antenna based on deconvolution. Background technique [0002] With its strong penetrability, high resolution and all-weather working characteristics, micro-power ultra-wideband pulse pulse radar can be widely used in military and civilian search and rescue fields such as anti-terrorism security checks and urban street fighting. As the main component of radar, the antenna usually accounts for the vast majority of the overall volume and weight in traditional radar systems. Considering the actual detection requirements and portable use requirements of micro-power ultra-wideband impulse pulse radar, planar butterfly or planar conical antennas are mostly used. This type of planar antenna has the characteristics of omnidirectional radiation and small size, which also makes micro-power ultra-wideband Radar is more suita...

AI Technical Summary

Problems solved by technology

[0003] But at present, this kind of planar antenna also has its own various defects: the impulse pulse signal will appear different degrees of signal ringing and tailing on this kind of antenna, this effect will reduce the resolution of the radar and affect the detection ability

Since the detection target of the through-wall radar is that the electromagnetic wave penetrates the medium wall twice, the signal attenuation is relatively large, and this kind of hardware loading will further reduce the detection distance of the radar.

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