Adaptive beam forming method and device
An adaptive beam and constraint vector technology, applied in the field of radar, can solve the problems of limited multi-task parallel processing capability of DSP chips, unsuitable for high mobility platforms, and reduced economic benefits, so as to meet real-time requirements and reduce calculation time consumption , Improve the effect of processing efficiency
Active Publication Date: 2021-02-19
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology
When the amount of echo data is large, in order to meet the real-time requirements of signal processing, the radar antenna usually adopts multi-channel multi-task processing technology. However, the DSP chip has limited parallel processing capabilities for multi-channel multi-task, and the number of DSP chips must be increased to meet the requirements. The demand for multi-channel multi-tasking signal processing will not only lead to higher development costs, but also reduce economic benefits, and it is a huge challenge to power consumption and volume, which is not suitable for use on high-mobility platforms
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[0061]An adaptive beamforming method and device proposed in the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and all use imprecise scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In order to make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present i...
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The invention discloses an adaptive beam forming method and device. The adaptive beam forming method comprises the steps: acquiring a main lobe steering vector of an antenna according to the incidentdirection of a target and the number of array elements of the antenna; obtaining a main lobe angle constraint vector of the antenna according to the incident direction and the number of the array elements; obtaining a covariance matrix according to the echo data of the target; and according to the main lobe steering vector, the main lobe angle constraint vector and the covariance matrix, obtaininga main lobe robust adaptive beamforming weight to generate a corresponding antenna pattern. According to the invention, the main lobe robust adaptive beamforming weight can be quickly obtained, so that the antenna signal processing efficiency is improved, and the real-time requirement of a high-maneuverability platform on antenna signal processing is met.
Description
technical field [0001] The invention relates to the field of radar technology, in particular to an adaptive beam forming method and device suitable for high mobility platforms. Background technique [0002] As an important method of radar antenna array signal processing, the adaptive beamforming method can adaptively change the beamforming weights of the antenna array elements through information such as the incident direction of the target and echo data, so that the radar antenna has better interference suppression capabilities and greater resolution. At present, the adaptive beam methods used for high maneuvering platforms include the minimum mean square error method, the linear constraint minimum variance method, and the maximum signal-to-interference-noise ratio method, etc., but the above methods cannot overcome the target position mismatch problem caused by external errors. [0003] At present, most domestic adaptive beamforming methods for high-mobility platforms are...
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IPC IPC(8): G01S7/02G06F17/16
CPCG01S7/02G06F17/16Y02D30/70
Inventor 施君南侯凯强姜艳娜蒋洁李伯达许彦章张天键杜科
Owner SHANGHAI RADIO EQUIP RES INST