Frequency point power self-adaptive control method for stepped frequency through-wall radar

A technology of adaptive control and step frequency, applied in the field of radar, can solve problems such as large positioning error, ranging error, and reduce the distance resolution capability of through-wall radar, so as to improve accuracy, eliminate broadening and distortion, and ensure flatness. Effect
CN102680950AInactive Publication Date: 2012-09-19UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2012-09-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a frequency point power self-adaptive control method for a stepped frequency through-wall radar. The method comprises the following steps of: determination of the attenuation characteristic of a wall: determining the power attenuation characteristic of each discrete frequency point of an ultra-wideband stepped frequency signal in the process of penetrating through the wall forwards and backwards for two times; and control over the transmitting power of the frequency points: determining the power attenuation characteristic corresponding to the wall type of a building which is currently detected, and pre-compensating the transmitting power of each discrete frequency point on an ultra-wideband stepped frequency transmitter according to the power attenuation characteristic in the process of penetrating through the wall forwards and backwards for two times. By adoption of the frequency point power self-adaptive control method for the stepped frequency through-wall radar, the flatness of the power of each frequency point of a target echo of a human body can be ensured, widening and distortion of pulse waveform caused by power fluctuation of the frequency points of the stepped frequency target echo are eliminated, and the positioning accuracy of a hidden human body target in the building is improved.
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Description

Technical field

[0001] The invention relates to radar technology, in particular to step-frequency through-wall radar technology. Background technique

[0002] As the only detection device that can penetrate the walls of buildings to detect hidden human targets inside buildings, through-wall radar uses electromagnetic waves of specific frequencies that can penetrate the walls of buildings, and extracts the position of human targets through echo signal processing Information such as, status and vital characteristics can realize the detection, positioning, tracking, imaging and recognition of hidden human targets inside the building. Penetrating radar can be widely used in public security, armed police, customs, security, fire protection and other fields, and has important research value and broad application prospects.

[0003] According to research results at home and abroad, one of the main detection functions of the through-wall radar is the location of hidden human targets insid...

Claims

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