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Satellite microwave scatterometer radar backscattering coefficient acquisition method and corresponding device

A technology of backscatter coefficient and microwave scatterometer, applied in radio wave measurement systems, ICT adaptation, climate sustainability, etc. The accuracy of noise measurement data cannot be guaranteed, so as to achieve the effect of accurate radar backscatter coefficient, improved real-time performance, and improved calculation efficiency

Active Publication Date: 2022-05-20
NAT SATELLITE OCEAN APPL SERVICE
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  • Application Information

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Problems solved by technology

[0004] However, in the prior art, since the accuracy of the acquired internal calibration and noise measurement data cannot be guaranteed, the acquired radar backscatter coefficient may be inaccurate, which in turn affects the accuracy of the inverted wind field vector

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  • Satellite microwave scatterometer radar backscattering coefficient acquisition method and corresponding device
  • Satellite microwave scatterometer radar backscattering coefficient acquisition method and corresponding device
  • Satellite microwave scatterometer radar backscattering coefficient acquisition method and corresponding device

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Embodiment Construction

[0063] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

[0064] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be under...

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Abstract

The embodiment of the invention provides a satellite microwave scatterometer radar backscattering coefficient acquisition method and a corresponding device. The method comprises the following steps: acquiring an internal calibration measurement value, a background noise measurement value and an echo measurement value output by a microwave scatterometer in each rotation period; screening the internal calibration measurement value and the background noise measurement value based on a preset quality evaluation standard, and performing moving average processing on the internal calibration measurement value and the background noise measurement value obtained through screening to obtain a target internal calibration measurement value and a target background noise measurement value; and obtaining a corresponding radar backscattering coefficient based on the target internal calibration measurement value and the target background noise measurement value corresponding to each rotation period. According to the scheme, the measured value corresponding to each rotation period is more accurate, so that the calculated radar backscattering coefficient is more accurate. Meanwhile, according to the scheme, the calculation efficiency is improved, and the real-time performance of obtaining the radar backscattering coefficient is improved.

Description

technical field [0001] The present application relates to the field of space microwave remote sensing technology, in particular, the present application relates to a satellite microwave scatterometer radar backscatter coefficient acquisition method and a corresponding device. Background technique [0002] The microwave scatterometer of Haiyang No. 2 satellite (HY-2) adopts a double-point pencil beam system. The antenna adopts a parabolic reflector antenna to generate two spot beams, the inner beam is horizontally polarized and the outer beam is vertically polarized. Through 360° rotation (that is, one rotation cycle), 4 different azimuth angles and wide-swath measurements of the same resolution unit are realized. [0003] The HY-2 microwave scatterometer adopts the pulse radar system, designed with two beams inside and outside, the two beams work alternately, the antenna beam scans 360 degrees around the central axis, the scanning speed is 95° / s, the emission pulse width is...

Claims

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/41Y02A90/10
Inventor 张毅林明森
Owner NAT SATELLITE OCEAN APPL SERVICE
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