Acta Geodaetica et Cartographica Sinica >

2017 , Vol. 46 >Issue 1: 44 - 52

DOI: https://doi.org/10.11947/j.AGCS.2017.20160050

Relative Calibration of Altimeters under Dual-satellite Formation Flying Altimetry Mode

  • GUAN Bin ,
  • SUN Zhongmiao ,
  • LIU Xiaogang ,
  • ZHAI Zhenhe
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  • 1. Institute of Geography Spatial Information, Information Engineering University, Zhengzhou 450052, China;
    2. State Key Laboratory of Geo-information Engineering, Xi'an 710054, China;
    3. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China;
    4. Military Key Laboratory of Surveying, Mapping and Navigation of Engineering, Information Engineering University, Zhengzhou 450052, China

Received date: 2016-02-03

  Revised date: 2016-10-25

  Online published: 2017-02-06

Supported by

The National Natural Science Foundation of China (Nos. 41174017;41304022);Open Foundation of Military Key Laboratory of Surveying, Mapping and Navigation of Engineering

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Abstract

A relative calibration method used in a novel dual-satellite formation flying altimetry mode is proposed, and a complete formula for calculating relative bias between altimeters is presented. Power spectrum analysis of each correction term in relative bias calculation formula and statistical analysis of differential sequences are respectively conducted with Jason-2 altimetry data. Under the premise that a centimeter level calibration accuracy is ensured, the formula is simplified and error budget is made. The results show that all correction items have low frequency characteristic, and the relative bias error is mainly related to the relative radial orbit error between two satellites, range error, sea state bias as well as the differential geoid height error between two comparison points. As for single overflight, the accuracy of relative bias between two altimeters is about 1.99 cm.

Key words： dual-satellite formation; satellite altimetry; relative calibration; power spectrum estimation; sea surface height

Cite this article

GUAN Bin , SUN Zhongmiao , LIU Xiaogang , ZHAI Zhenhe . Relative Calibration of Altimeters under Dual-satellite Formation Flying Altimetry Mode[J]. Acta Geodaetica et Cartographica Sinica, 2017 , 46(1) : 44 -52 . DOI: 10.11947/j.AGCS.2017.20160050

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