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Super-resolution distance detection method for pulsed radar based on model matching

A model matching and super-resolution technology, which is applied in measurement devices, radio wave measurement systems, radio wave reflection/reradiation, etc., can solve the problem of resolution estimation characteristic degradation and achieve good imaging quality and fine target detection performance Effect

Active Publication Date: 2017-04-12
NO 50 RES INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

When the target size exceeds the pulse width or temporal coherence length of the probe signal, the practical resolution estimation properties of the method degrade significantly

Method used

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  • Super-resolution distance detection method for pulsed radar based on model matching
  • Super-resolution distance detection method for pulsed radar based on model matching
  • Super-resolution distance detection method for pulsed radar based on model matching

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[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

[0030] Such as figure 1 with figure 2 As shown, the super-resolution distance detection method of the pulse radar based on model matching comprises:

[0031] Step S1: Use constant false alarm and least square method to solve a set of distance and amplitude sets [τ k , A k ];

[0032]...

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Abstract

A super-resolution distance detecting method for a pulse radar based on model matching comprises: a group of distance and amplitude set is solved after K times of iteration are carried out by using the constant false alarm rate and the least square method. the distance and amplitude set [tk,Ak] is estimated based on a first round iteration, and when the first round iteration is exited, a second round iteration is carried out through calculating the difference between model matching errors and the remaining errors of the previous and present matching. According to the technical scheme, the super-resolution distance detecting method for the pulse radar based on model matching solves the technical problems, including the actual resolution estimation feature can be maintained, the finer target detecting performance can be obtained and the better imaging quality can be achieved.

Description

technical field [0001] The invention relates to the technical field of near-field ultra-wideband time-domain narrow-pulse radar detection, in particular to a super-resolution distance detection method for pulse radar based on model matching. Background technique [0002] Near-field Ultra-Wide-Band Impulse Radar (UWB, Ultra-Wide-Band Impulse RADAR) has been widely used in various near-field imaging detection and fine target characteristic detection occasions. UWB imaging quality and target detection performance largely depend on the time-distance resolution detection accuracy in its practical application. Traditional UWB or continuous wave radars generally use various constant false alarm detection methods to detect the time-distance resolution characteristics of the target. This method mainly uses the energy statistical distribution characteristics of the echo to obtain various statistical average detection methods. Resolution is limited by the theoretical resolution level ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/08
CPCG01S13/08
Inventor 朱玉晓赵观星曹照清吴美武
Owner NO 50 RES INST OF CHINA ELECTRONICS TECH GRP