基于卫星联合观测的交叉匹配约束机制分析  

The Analysis of Cross-matching Constraint Mechanism Based on the Satellite Joint Observation

作　　者：陈轩[1] 齐文雯[1] 谭伟[1] 何红艳[1] CHEN Xuan;QI Wen-wen;TAN Wei;HE Hong-yan(Beijing Institute of Space Mechanics&Electricity Key Laboratory for Advanced Optical Remote Sensing Technology of Beijing,Beijing 100094)

机构地区：[1]北京空间机电研究所先进光学遥感技术北京市重点实验室,北京100094

出　　处：《长春理工大学学报（自然科学版）》2020年第4期1-7,共7页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家重点研发计划(2018YFB0504801)。

摘　　要：定标轨道预报是空间辐射基准传递定标的前提,通过利用卫星的轨道参数和定标场地信息,结合联合观测约束条件,预报出两颗卫星的时间信息和位置信息。简单介绍了空间辐射基准传递定标的轨道规划流程,研究了用于轨道预报的卫星空间位置计算方法。通过分析限定联合观测交叉频次的观测时间间隔、观测角度差异等约束条件,选取TERRA和Landsat8作为辐射基准卫星,GF-1、GF-2、GJ-1等作为待定标卫星进行了针对全球6个地面定标场地的联合观测交叉匹配约束机制分析。仿真、分析的结果有助于开展以2次/月交叉频次的基准载荷轨道优化设计,为实现我国卫星在轨高频次、高精度辐射定标提供技术支持。Orbit prediction is the premise of consistency transfer calibration of space radiation standard.By using the satellite’s orbital elements and the calibration sites information,the time and location of the two satellites are predicted with the joint observation constraints.The orbit prediction process of the consistency transfer calibration of space radiation standard is briefly introduced,and the satellite space position calculation method for orbit prediction is studied.By selecting TERRA and Landsat8 as the radiation reference satellites,GF-1,GF-2,GJ-1,etc.as the satellites to be calibrated and analyzing the constraints such as the observation time interval and the observation angle difference that limit the joint observation cross frequency,the analysis of the cross-matching constraint mechanism is done with the six calibration sites.The simulation and analysis results are helpful for the optimization design of the standard satellite orbit with the cross frequency of twice a month,and could provide technical support for the high-frequency and high-precision in-orbit radiometric calibration for Chinese satellites.

关 键 词：遥感 轨道预报 辐射基准卫星 交叉定标 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]