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Airborne radar self-adaptation double-pointing and difference beam target joint detection method

An airborne radar and joint detection technology, which is applied to radio wave measurement systems, instruments, etc., can solve problems such as detection performance degradation, and achieve the effect of improving detection performance and improving target detection performance

Active Publication Date: 2015-06-24
XIDIAN UNIV
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Problems solved by technology

This method only forms the maximum gain for the target at the center of the main beam, but when the target deviates from the center of the main beam, the target may cause a decrease in detection performance due to the gain loss caused by the edge of the beam

Method used

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  • Airborne radar self-adaptation double-pointing and difference beam target joint detection method

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing:

[0022] refer to figure 1 , is a flow chart of the airborne radar adaptive dual-directional and difference beam target joint detection method of the present invention. The target joint detection method of the airborne radar self-adaptive bidirectional and difference beam comprises the following steps:

[0023] Step 1, using the receiving array of the airborne radar to receive space-time two-dimensional echo data; the receiving array of the airborne radar is a uniform linear array composed of N array elements.

[0024] Specifically, the airborne radar works in the side-view mode, and the receiving array of the airborne radar is a uniform linear array composed of N array elements; Within the coherent accumulation time of a pulse, the space-time two-dimensional echo data is received by the receiving array of the airborne radar.

[0025] Step 2. Construct the spatial steering...

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Abstract

The invention belongs to the technical field of radar target detecting and discloses an airborne radar self-adaptation double-pointing and difference beam target joint detection method. The method comprises the steps that two equal wave beam airspace guiding vectors of a leftward deviation set angle and a rightward deviation set angle of a main wave beam center are constructed, q is equal to 1 and 2 in sequence, the data of each distance unit in the space-time two-dimension echo data are processed through a Doppler domain factorization method respectively, and under the constraint of a <q>th equal wave beam, an airspace self-adaptation filtering result of a corresponding filtering unit is obtained; according to the airspace self-adaptation filtering results of distance units under the constraint of the <q>th equal wave beam, unit average constant false-alarm detecting is carried out respectively, and a <q>th group of target detecting units are obtained; if in a first group of target detecting units and a second group of target detecting units, any group of target detecting results are existing targets, the final target detecting results are the existing targets; and otherwise, the final target detecting results are non-existing targets.

Description

technical field [0001] The invention belongs to the technical field of radar target detection, and in particular relates to a target joint detection method of self-adaptive dual-direction and difference beams of airborne radar. Background technique [0002] The main task of airborne radar is to detect targets in the clutter background. One of the more commonly used detection methods is the target detection method based on adaptive and beam. This method only forms the maximum gain for the target at the center of the main beam, but when the target deviates from the center of the main beam, the target may cause a decrease in detection performance due to the gain loss caused by the edge of the beam. Contents of the invention [0003] The purpose of the present invention is to aim at the deficiencies in the prior art, propose the target joint detection method of airborne radar self-adaptive two-pointing and difference beam, the present invention constructs and deviates from two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/414
Inventor 王彤任鹏丽吴建新王志林
Owner XIDIAN UNIV
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