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Satellite carried SAR inner marking signal processing platform system and realization method thereof

A signal processing and internal calibration technology, applied in the field of signal processing, can solve the problems of transfer function reliability, low precision, no radar working state analysis, and no data preprocessing, etc., to achieve effective monitoring, improve accuracy, and improve reliability sexual effect

Inactive Publication Date: 2008-03-05
BEIHANG UNIV
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Problems solved by technology

[0005] A common point of these processing methods is to obtain the transfer function of each loop, but before obtaining the transfer function of these loops, no preprocessing is done on the data, and no analysis is made on the working state of the radar. Function reliability and accuracy are not high

Method used

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  • Satellite carried SAR inner marking signal processing platform system and realization method thereof
  • Satellite carried SAR inner marking signal processing platform system and realization method thereof
  • Satellite carried SAR inner marking signal processing platform system and realization method thereof

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Embodiment Construction

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0056] As shown in Fig. 1, the present invention is a spaceborne SAR internal calibration signal processing platform. It includes an effective data extraction module 1, an analysis result interpretation module 6, a stability calibration module 3, a phase error calibration module 2, a TR component frequency domain calibration module 5 and a reliability inspection module 4. Effective data extraction module 1 extracts the effective data in the original internal calibration signal of the input platform by adaptive adjacent comparison method, and outputs this group of effective data to stability calibration module 3, phase error calibration module 2, TR component frequency domain calibration module 5 and reliability inspection module 4; Stability calibration module 3 performs matching filtering on the internal calibration data, measures the amplitude and phase at ...

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Abstract

The platform thereof comprises 6 modules which are: a data extracting module, a stability calibrating module, a phase error calibrating module, a TR assembly frequency domain scaling module, a reliability checking module and a analysis result interpreting module. The method uses a parallel process approach to process the internal calibration signals.

Description

technical field [0001] The invention belongs to the field of signal processing, and relates to a signal processing platform, in particular to a spaceborne SAR internal calibration signal processing platform. Background technique [0002] Synthetic Aperture Radar (SAR) satellites have developed rapidly in recent years. Since SAR satellites are not limited by factors such as weather, geography, and time, they can observe the earth all day long and have certain penetrating power, so they are widely used. It is used in military reconnaissance, resource detection, ocean observation, ecological monitoring, etc. [0003] In the internal transmission process of the radar, in order to expand the application field of SAR and obtain SAR remote sensing images with high definition and high visibility, it is necessary to compensate the echo signal of the radar. However, due to the non-ideality of the internal components of the radar will cause the distortion of the signal amplitude and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/90
Inventor 陈杰杨威王鹏波周荫清李春升
Owner BEIHANG UNIV
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