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Full-dimension and difference angle measurement method for zero setting conformal calibration of a planar phased array

A plane phase and zero adjustment technology, applied in the field of signal processing, can solve problems such as distortion and large angle measurement error

Active Publication Date: 2014-12-10
XIDIAN UNIV
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Problems solved by technology

In the above method, when the main lobe interference exists, the difference angle curve will be severely distorted, resulting in a very large angle measurement error

Method used

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  • Full-dimension and difference angle measurement method for zero setting conformal calibration of a planar phased array
  • Full-dimension and difference angle measurement method for zero setting conformal calibration of a planar phased array
  • Full-dimension and difference angle measurement method for zero setting conformal calibration of a planar phased array

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Embodiment Construction

[0069] Such as figure 1 as shown, figure 1 It is the arrangement diagram of the antenna array of the present invention. Arbitrarily arranged phased arrays are placed on the YOZ plane, and the angle θ between the incoming wave (incident signal) and the XOY plane is defined as the pitch angle, and the angle between the projection of the incoming wave on the XOY plane and the X axis is the azimuth angle, L y with L z represent the apertures of the planar phased array along the Y-axis direction and along the Z-axis direction, respectively.

[0070] The core idea of ​​the method of the present invention is: through the azimuth and elevation zero adjustment shape-preserving correction algorithm to obtain the full-dimensional and adaptive weights of the azimuth and elevation respectively, and to obtain the difference ratio and the angle discrimination curve through the main beam scanning, and to segment the angle discrimination curve by the inflection point, The estimation vecto...

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Abstract

The invention relates to a full-dimension and difference angle measurement method for zero setting conformal calibration of a planar phased array. The method comprises the following steps: evaluating to obtain an interference information matrix according to a block matrix and received data; obtaining a beam pointing Taylor sum weight vector and a direction / pitch Bayliss difference weight vector through Taylor and Bayliss functions; obtaining a direction / pitch full-dimension sum self-adaptive weight vector through a zero setting conformal calibration algorithm; obtaining a direction / pitch sum and difference beam directional diagram, and direction / pitch full-dimension sum beam output and difference output through the self-adaptive weight vector and the difference weight vector; obtaining a direction / pitch difference ratio sum resolvable angle curve and a direction / pitch difference ratio sum output value; counting the number of inflection points of the direction / pitch difference ratio sum resolvable angle curve, and adopting a nearest method to obtain a target direction / pitch angle estimation vector; and calculating to obtain a CAPON spectrum of a direction / pitch angle estimation value, searching a direction / pitch angle combination corresponding to a maximum value of the CAPON spectrum, and obtaining a target direction / pitch angle estimation value.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a signal processing method of a plane phased array antenna array, which can be used for any formation of plane phased array radar. Background technique [0002] With the reduction of the cost of receiving / transmitting (T / R) components and the rapid development of high-speed and high-throughput digital devices, the application of phased array antennas in civil and national defense fields is increasing, such as communication multi-user detection, parallel output of navigation satellite signals , measurement and control one station multi-satellite / machine and radar multi-target detection etc. However, with the increase of radio equipment, the shortage of frequency code resources and the intensification of electronic countermeasures, phased array antennas usually work in complex interference (including unintentional or intentional interference) environments. If ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
Inventor 杨绪曾操王兰美李军陶海红廖桂生
Owner XIDIAN UNIV
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