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A multi-scan multi-frequency full-airspace meteorological target detection method for airborne weather radar

An airborne weather radar and multi-scan technology, which can be applied to measurement devices, climate sustainability, radio wave measurement systems, etc., can solve the problems of increasing data volume and affecting processing speed, etc.

Inactive Publication Date: 2018-06-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
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Problems solved by technology

At the same time, due to the use of multi-scan technology, the amount of data will inevitably increase, which will affect the processing speed

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  • A multi-scan multi-frequency full-airspace meteorological target detection method for airborne weather radar
  • A multi-scan multi-frequency full-airspace meteorological target detection method for airborne weather radar
  • A multi-scan multi-frequency full-airspace meteorological target detection method for airborne weather radar

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] The present invention is an airborne meteorological radar multi-scan and multi-frequency full-airspace meteorological target detection method, which adopts a multi-beam scanning method in the vertical direction, improves detection accuracy, increases the detection distance, and effectively suppresses ground clutter interference; Variable density scanning increases the speed of scanning and subsequent data processing. Synthesize the obtained three-beam scanning echo signals to obtain the distribution of meteorological targets in the entire airspace in front of the carrier aircraft, providing a strong guarantee for flight safety.

[0040] attached figure 1 It is a schematic diagram of the airborne weather radar multi-scan multi-frequency full-airspace meteorological target detection method. Using multi-scanning airborne weather radar, the scannin...

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Abstract

The invention, which relates to the technical field of meteorological radar signal processing, provides a multi-scanning multi-pulse-repetition-frequency full-airspace meteorological target detection method for an airborne weather radar. With a multi-scanning airborne weather radar, low-beam, middle-beam, and high-beam scanning methods are used at a vertical direction, variable-density scanning is carried out at a horizontal direction, and intensive scanning is employed at a course area and areas at two sides, so that the detection precision is improved; and a proper sparse scanning way is employed for the course area, so that the scanning and post data processing speeds are increased. The obtained tree-beam scanning echo signals are synthesized and thus full-airspace meteorological target distribution situation ahead of the aerial carrier is obtained, thereby providing the powerful guarantee for flight safety. According to the invention, the detection precision of the airborne weather radar can be improved; the detection distance can be increased; the earth clutter interference can be suppressed; and the full-airspace meteorological target distribution situation can be obtained.

Description

technical field [0001] The invention relates to the technical field of weather radar signal processing, in particular to a method for detecting weather targets. Background technique [0002] Airborne weather radar is an onboard electronic device that is mandatory for commercial aircraft. It can detect disastrous weather such as turbulence, thunderstorms, and hail on the aircraft route in real time, and can also detect wind shear during takeoff and landing. It can be called the aircraft's "Two eyes" play a pivotal role in ensuring flight safety. With the opening of more and more air routes in my country and the busier commercial flights, the requirements for airborne weather radar are also getting higher and higher. Due to the limitation of the radar horizon, the traditional single-scan airborne weather radar can only detect meteorological targets within the tangent range of the radar beam to the earth's surface. At the same time, due to the limitation of the radar beam wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/95
CPCG01S13/953Y02A90/10
Inventor 石海杰李京华岳露
Owner NORTHWESTERN POLYTECHNICAL UNIV
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