Offset correction method for spaceborne microwave radiometer

A microwave radiometer and satellite-borne microwave technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of unavailable, lack of system, reliability verification and deviation correction, etc., to achieve clear correctness and high accuracy Effect

Active Publication Date: 2017-04-19
NAT SPACE SCI CENT CAS
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing deviation correction method lacks systematic and reliable verification and deviation correction, and cannot provide a high-precision brightness temperature value, thereby causing the problem of calibration accuracy analysis of satellites in orbit , the invention provides a deviation correction method for a spaceborne microwave radiometer

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  • Offset correction method for spaceborne microwave radiometer
  • Offset correction method for spaceborne microwave radiometer
  • Offset correction method for spaceborne microwave radiometer

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Embodiment Construction

[0028] The present invention will be further described now in conjunction with accompanying drawing.

[0029] like Figure 4 As shown, the present invention provides a deviation correction method for a spaceborne microwave radiometer. The deviation correction method for a spaceborne microwave radiometer uses the thermal vacuum calibration test data and instrument backup data before the launch of the microwave radiometer, And microwave radiometer on-orbit operation telemetry data and deviation correction of remote sensing data, and then get accurate brightness temperature value, so as to analyze the accuracy of on-orbit calibration of successfully launched satellites. Specific steps are as follows:

[0030] Step 1) According to the telemetry data packet transmitted by the space-borne microwave radiometer running in orbit, use communication analysis, main-standby analysis, power supply analysis and temperature analysis to judge whether the instrument is working in a normal stat...

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Abstract

The invention relates to an offset correction method for a spaceborne microwave radiometer. The offset of thermal vacuum calibration test data and apparatus backup data before emission of the microwave radiometer, and on-orbit operation remote-measurement data and remote sensing data of the microwave radiometer are corrected to obtain accurate brightness temperature value, so that the on-orbit calibration and accurate analysis of successfully launched satellite can be conducted. The satellite data quality is improved, and can be better applied to climate research and data assimilation.

Description

technical field [0001] The invention relates to the technical field of space-borne microwave radiometers, in particular to a deviation correction method for space-borne microwave radiometers. Background technique [0002] At present, before the satellite is launched, the ground test needs to conduct a comprehensive test on the performance indicators of the various functions of the instrument to ensure that the satellite can be successfully launched. However, due to the fact that the development progress and the time required for the development of each functional part of the instrument are different, the experimental data based on the thermal vacuum calibration, the backup parts of the instrument and the operational operation of the instrument measured by each instrument part are different. There are substantial deviations in the measured data. Therefore, it is necessary to verify the performance of each component of the instrument, so as to correct the deviation of the spa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 何杰颖张升伟王振占
Owner NAT SPACE SCI CENT CAS
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