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Method of Multi-Channel Calibration for Active Phased Array Radar

A phased array radar and multi-channel technology, which is applied in the field of radar and measurement and control, can solve the problems of radar performance degradation, no solution proposed, no compensation, etc., and achieve the effect of compensating amplitude characteristic inconsistency and multi-channel correction performance

Active Publication Date: 2017-01-11
融鼎岳(北京)科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0002] During the operation of the active phased array radar, many reasons need to use the online self-calibration method: after a long period of operation, due to the aging of the device itself and the influence of the environment, the initial parameters of the multi-channel deviate from the factory state. Continuing to use the factory data as a reference will cause the performance of the radar to degrade and require recalibration
In the microstrip communication of traditional radar, the closed-loop gain control (CLGC) function is usually included to ensure that the signal receiving channel gain is stable at the desired accuracy when the system is running; since the CLGC function can only maintain the stability of the overall channel gain, it does not The compensation (or equalization) function of channel amplitude inconsistency characteristics. The traditional method cannot effectively compensate channel inconsistency and inconsistency in amplitude response between multiple channels when the receiving channel has inconsistency in amplitude characteristics, and the correction performance is not ideal.
[0003] Therefore, for the above-mentioned problems existing in related technologies, effective solutions have not yet been proposed

Method used

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Embodiment Construction

[0028] The following and accompanying appendices illustrating the principles of the invention Figure 1 A detailed description of one or more embodiments of the invention is provided together. The invention is described in connection with such embodiments, but the invention is not limited to any embodiment. The scope of the invention is limited only by the claims and the invention encompasses numerous alternatives, modifications and equivalents. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. These details are provided for the purpose of example and the invention may be practiced according to the claims without some or all of these specific details.

[0029] In order to solve the problem of channel amplitude correction in the case of inconsistent receiving channel amplitude characteristics in wideband radar systems, the present invention proposes a receiving channel amplitude correct...

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Abstract

The invention discloses a multi-channel calibration method for an active phased array radar. The multi-channel calibration method for the active phased array radar comprises configuring a plurality of receiving channels in an active phased array radar system, wherein every receiving channel comprises a plurality of frequency domain carrier wave subsets and calibrating the gain amplitude of a plurality of single receiving channels of the same carrier wave subset and the gain amplitude of different carrier wave subsets of the same receiving channel. The multi-channel calibration method for the active phased array radar effectively compensates inconformity of the amplitude and the characteristic of the receiving channels and obtains a better multi-channel calibration performance.

Description

technical field [0001] The invention relates to the field of radar and measurement and control, in particular to a method for multi-channel correction of an active phased array radar. Background technique [0002] During the operation of the active phased array radar, many reasons need to use the online self-calibration method: after a long period of operation, due to the aging of the device itself and the influence of the environment, the initial parameters of the multi-channel deviate from the factory state. Continuing to use the factory data as a reference will cause the performance of the radar to degrade and require recalibration. In the microstrip communication of traditional radar, the closed-loop gain control (CLGC) function is usually included to ensure that the signal receiving channel gain is stable at the desired accuracy when the system is running; since the CLGC function can only maintain the stability of the overall channel gain, it does not The compensation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
CPCG01S7/4021
Inventor 陈海清刘宇波
Owner 融鼎岳(北京)科技有限公司
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