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A noise suppression system and method for phased-array based systems

A technology of noise suppression and auxiliary array, which is applied in the field of noise reduction in phased array systems, and can solve the problem of lower azimuth resolution of the main antenna array

Inactive Publication Date: 2005-08-10
RAYTHEON CANADA LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this will result in the main antenna array having a smaller aperture (i.e., a smaller number of antenna elements) with reduced azimuth resolution

Method used

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  • A noise suppression system and method for phased-array based systems
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Embodiment Construction

[0066] All experimental data shown here is from SWR-503 at Cape Race, Newfoundland, Canada TM HFSWR system. SWR-503 TM The HFSWR system was developed by Raytheon Canada Ltd. SWR-503 TM The HFSWR system includes a receive antenna array with 16 antenna elements (ie, a main detector array with 16 detectors).

[0067] Each of the terms "range data", "Doppler data", "azimuth data", "detector data" or "pulse data" as used herein means a one-dimensional sequence of data points in a given domain. Furthermore, the term "range-Doppler data" means two-dimensional data for a given azimuth or for a given detector, and the term "range-doppler data" means two-dimensional data for a given Doppler Two-dimensional data of Le values ​​or a given pulse index. Furthermore, the terms "range-pulse-detector", "range-Doppler-detector" and "range-Doppler-azimuth data" mean three-dimensional data. Furthermore, the term "a portion" of data means that the portion of data has a smaller dimension than...

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Abstract

This invention relates to a system and method for suppressing external interference in radar data provided by a plurality of sensors from a main sensor array, the data being pre-processed. The noise suppression system includes a first processing module and a second processing module. The first processing module receives the radar data and produces matched radar data while the second processing module receives the radar data and produces mis-matched radar data. The system further includes a beamformer that is in communication with the first processing module and an adaptive beamformer that is in communication with the second processing module and the beamformer. The beamformer receives the matched radar data and produces beamformed matched radar data.

Description

technical field [0001] The present invention relates to noise reduction in phased array systems, and more particularly, to a system and method for noise reduction in phased array systems using adaptive array processing. Background technique [0002] High Frequency Surface Wave Radar (HFSWR) can be effectively used to continuously detect and track ships, aircraft, icebergs and other water targets from a shore-based position. As such, HFSWR is used to enhance search and rescue operations, as well as to monitor maritime conditions, illegal immigration, illegal drug trade, illegal fishing, smuggling and piracy. [0003] The HFSWR system is installed along the shoreline and includes a directional transmit antenna and an omnidirectional receive antenna array pointing towards the ocean, as well as the hardware and software required to operate the system. The transmit antenna generates a series of electromagnetic (EM) pulses that are radiated to a desired surveillance area. The re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/292G01S7/32G01S13/02G01S13/524
CPCG01S7/292G01S13/5244G01S13/0218G01S13/524
Inventor 礼萨·迪扎基托尼·庞斯福德里克·麦克拉切尔
Owner RAYTHEON CANADA LTD
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