Phase weighted side lobe suppression method based on alternative projection

A phase weighting and side lobe suppression technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as affecting output power, implementing complexity, reducing radar main lobe detection power, etc., achieving easy engineering implementation, improving side lobe performance, The effect of improving low intercept performance

Active Publication Date: 2017-09-12
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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  • Abstract
  • Description
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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 side lobe suppression method based on alternative projection
  • Phase weighted side lobe suppression method based on alternative projection
  • Phase weighted side lobe suppression method based on alternative 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 with reference to the accompanying 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 are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements or elements having the same or similar functions. The described embodiments are a part of the embodiments of the present invention, but not all of the embodiments, and the embodiments of the present application and the features of the embodiments can be combined with each other without conflict. Based on the embodiments of the...

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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 side lobe suppression method based on alternate projection. Background technique [0002] The phased array radar is an electronic device with high transmission power. When it finds the target, the high-power electromagnetic signal it emits is also easy to be discovered and intercepted by the electronic reconnaissance equipment of the other party, thereby incurring electronic interference and anti-radiation missiles from the other party. s attack. Therefore, improving the concealment of the phased array radar and reducing the probability of being intercepted by the opponent's electronic reconnaissance equipment are important measures for the phased array radar to take the initiative and avoid electronic interference and destruction in the process of electronic countermeasures. [0003] Each radiator of the phased array radar is followed by a digit...

Claims

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Application Information

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Patent Type & Authority Applications(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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