Phase-weighted sidelobe suppression method based on alternating projection

A phase-weighted, alternate projection technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of reducing the detection power of the main lobe of radar, realizing complexity, affecting output power, etc., to improve low interception performance, easy engineering implementation, improvement Effects of side lobe performance

Active Publication Date: 2021-02-19
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] 1. It is necessary to configure the amplitude attenuator, which is more complicated to realize in engineering;
[0005] 2. It affects the output power and reduces the detection power of the main lobe of the radar;
[0006] 3. Due to the attenuation of the output power, a large amount of output power is converted into heat, which puts forward higher requirements for system heat dissipation

Method used

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  • Phase-weighted sidelobe suppression method based on alternating projection
  • Phase-weighted sidelobe suppression method based on alternating projection
  • Phase-weighted sidelobe suppression method based on alternating projection

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Embodiment Construction

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention.

[0041] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are part of the embodiments of the present invention, but not all of the embodiments. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all othe...

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Abstract

The invention relates to the technical field of radar signal processing, and particularly provides a phase weighted side lobe suppression method based on alternative projection. The method comprises the following steps: firstly initializing parameters, projecting a directional diagram into a set (shown in the description), then projecting the directional diagram into a set (shown in the description), then determining an end condition, if the end condition is satisfied, stopping iteration, otherwise re-projecting the directional diagram, and after the iteration is ended, calculating an array antenna directional diagram. By adopting the method, the side lobe level of a phased array radar transmission directional diagram can be effectively decreased; and moreover, an amplitude attenuator does not need to be controlled, and the subsequent engineering implementation of an algorithm is facilitated.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a phase-weighted sidelobe suppression method based on alternating projections. Background technique [0002] Phased array radar is an electronic device with high transmission power. When it detects the target, the high-power electromagnetic signal it emits is also easy to be discovered and intercepted by the opponent's electronic reconnaissance equipment, thus incurring the opponent's electronic interference and anti-radiation missiles. s attack. Therefore, improving the concealment of phased array radar and reducing the probability of being intercepted by the opponent's electronic reconnaissance equipment is an important measure for phased array radar to gain the initiative and avoid electronic interference and destruction in the process of electronic countermeasures. [0003] Each radiator of the phased array radar is connected with a digital phase shifter and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 路成军韩晓东贺丰收
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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