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A Method for Dimensionality Reduction Four-Channel and Difference Beam Angle Measurement of Phased Array Radar

A technology of phased array radar and difference beam, which is applied in radio wave measurement system, radio wave reflection/re-radiation, measurement device, etc. It can solve the problems of tracking accuracy and tracking speed that cannot meet the needs of detection, tracking and guidance. Achieve the effects of widening the range of precision angle measurement, reducing the amount of computation, and reducing gain loss

Active Publication Date: 2019-03-29
XIDIAN UNIV +1
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Problems solved by technology

[0004] However, the traditional single pulse and difference beam angle measurement methods cannot meet the needs of current detection, tracking and guidance in terms of tracking accuracy and tracking speed.

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] refer to figure 1 , is a flow chart of a method for phased array radar dimensionality reduction four-channel and difference beam angle measurement of the present invention; refer to figure 2 , is the phased array radar dimensionality reduction four-channel and difference beam angle measurement structure schematic diagram of the present invention; The method for phased array radar dimensionality reduction four-channel and difference beam angle measureme...

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Abstract

The invention discloses a method for the dimensional-reduction four-channel sun-difference beam angle measurement of a phased array radar. The method includes the following steps that: the phased array radar is determined; sub-array division is performed on N array elements contained by the phased array radar, so that M sub-arrays and the number of array elements contained by each sub-array can be obtained; the sub-array-level sum weight, sub-array-level pitch difference weight, sub-array-level azimuth difference weight, sub-array-level double-difference weight and sub-array element-level weight of the optimized phased array radar are calculated, and the optimal dimension reduction matrix of the phased array radar is calculated; the directivity function of the sum beams of the phased array radar, the directivity function of the azimuth difference beams of the phased array radar, the directivity function of the pitch difference beams of the phased array radar and the directivity function of the double-difference beams of the phased array radar are calculated; and the final pitch directional angle of the target of the phased array radar and the final azimuth directional angle of the target of the phased array radar are estimated.

Description

technical field [0001] The invention relates to the technical field of radar array signal processing, in particular to a method for phased array radar dimensionality reduction four-channel and difference beam angle measurement, which is suitable for phased array radar and difference beam angle measurement, so as to realize the target signal source angle estimate. Background technique [0002] After World War II, with the development of military technology, single-shot tracking technology has been developed rapidly. Whether the tracking radar adopts conical scanning or beam switching, different radar echo pulses need to be compared, and due to various reasons, the radar echo signal strength will inevitably fluctuate at different times, resulting in tracking errors (scintillation errors). [0003] Aiming at the above problems, many methods have been proposed. Among them, the simultaneous lobe comparison method is used for monopulse tracking, that is, several independent simul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/68
CPCG01S13/68
Inventor 陶海红郭晓双孙晨伟张晓凤
Owner XIDIAN UNIV
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