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System simulation method of multi-mode microwave remote sensor scatterometer mode

A system simulation and scatterometer technology, applied in radio wave measurement system, radio wave reflection/re-radiation, instrument, etc., can solve the problem that the working parameters cannot be applied to multi-mode microwave remote sensors

Active Publication Date: 2020-12-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] The invention discloses a system simulation method for the scatterometer mode of a multi-mode microwave remote sensor to solve the problem that the system working parameters of the scatterometer in the prior art cannot be applied to the multi-mode microwave remote sensor

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  • System simulation method of multi-mode microwave remote sensor scatterometer mode
  • System simulation method of multi-mode microwave remote sensor scatterometer mode
  • System simulation method of multi-mode microwave remote sensor scatterometer mode

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with specific examples.

[0054] The present invention selects two types of wind fields, random and measured, as input wind fields. For these two types of wind farms, three wind farms with low, medium and high wind speeds were respectively set or selected. The random wind field used in the system simulation is set to a low-speed Gaussian wind field with an average value of 5m / s and a standard deviation of 2m / s, and a medium-speed Gaussian wind field with an average value of 10m / s and a standard deviation of 2m / s. A high-speed Gaussian wind field of 15 m / s and a standard deviation of 2 m / s.

[0055] The performance indicators and system parameters of the scatterometer mode in step S1.1 are known data, no calculation is required, and statistics are only needed to be collected, as shown in Table 1.

[0056] Table 1 Performance indicators and known technical parameters used in the design of multi-mode mi...

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Abstract

The invention discloses a system simulation method of a multi-mode microwave remote sensor scatterometer mode, and belongs to the technical field of microwave remote sensor measurement. The method comprises the following steps: acquiring performance indexes and system parameters of a scatterometer mode, calculating internal and external wave beam visual angles and incident angles, calculating azimuth antenna sizes and distance antenna sizes, calculating an antenna rotating speed range and a PRF range, calculating a signal bandwidth, calculating the signal bandwidth after frequency modulation removal processing, calculating a signal-to-noise ratio SNR, and calculating peak transmitting power; and outputting design results of system parameters, setting a wind field and sea surface simulationunder low, medium and high wind speed conditions, calculating a theoretical value of a back scattering coefficient of each resolution unit, simulating a sea surface radar echo signal, simulating a measured value of echo power, calculating a measured value of the back scattering coefficient by a radar equation, and performing wind field inversion.

Description

technical field [0001] The invention discloses a system simulation method for a scatterometer mode of a multi-mode microwave remote sensor, belonging to the technical field of microwave remote sensor measurement. Background technique [0002] The multi-mode microwave remote sensor is a new type of radar system mounted on a small satellite platform. It takes advantage of the flexible beam pointing control of the two-dimensional phased array antenna, and can realize stripping, spotlighting, and scanning on the satellite in time-sharing. SAR (Synthetic Aperture Radar, Synthetic Aperture Radar) imaging mode, and detection modes of marine dynamic elements such as altimeter, scatterometer, and spectrometer. The multi-mode microwave remote sensor has a very high flexibility, which can not only realize high-precision target detection, but also realize high-precision inversion of ocean dynamic elements, and has a good development prospect. [0003] The SAR mode is the main working m...

Claims

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Application Information

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IPC IPC(8): G01S13/90
CPCG01S13/90Y02A90/10
Inventor 周鹏薛莲戴永寿万勇曲晓俊孙伟峰李立刚郝宪锋
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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