上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2012年
3期
23-27
,共5页
极轨气象卫星%45°扫描镜%图像定位%扫描参数
極軌氣象衛星%45°掃描鏡%圖像定位%掃描參數
겁궤기상위성%45°소묘경%도상정위%소묘삼수
Polar orbiting meteorological satellitel 45° scanning mirrorl Geolocation%Scanning parameter
定量分析了定位模型中输入参数误差与定位误差关系,提出了一种结果的校正方法。根据图像定位结果实际的偏离规律选择定位模型中能校正该偏离的参数,修改该参数达到校正定位结果以实现精准定位。建立了极轨气象卫星行扫描光学遥感仪器的像元定位数学模型,分析了遥感器扫描参数偏差对定位结果的影响,给出了定量的定位偏差计算公式,为遥感器定位结果的校正提供了理论模型,可为遥感器设计的误差控制提供参考。
定量分析瞭定位模型中輸入參數誤差與定位誤差關繫,提齣瞭一種結果的校正方法。根據圖像定位結果實際的偏離規律選擇定位模型中能校正該偏離的參數,脩改該參數達到校正定位結果以實現精準定位。建立瞭極軌氣象衛星行掃描光學遙感儀器的像元定位數學模型,分析瞭遙感器掃描參數偏差對定位結果的影響,給齣瞭定量的定位偏差計算公式,為遙感器定位結果的校正提供瞭理論模型,可為遙感器設計的誤差控製提供參攷。
정량분석료정위모형중수입삼수오차여정위오차관계,제출료일충결과적교정방법。근거도상정위결과실제적편리규률선택정위모형중능교정해편리적삼수,수개해삼수체도교정정위결과이실현정준정위。건립료겁궤기상위성행소묘광학요감의기적상원정위수학모형,분석료요감기소묘삼수편차대정위결과적영향,급출료정량적정위편차계산공식,위요감기정위결과적교정제공료이론모형,가위요감기설계적오차공제제공삼고。
The relationship of the scanning parameter deviation and geolocation results was analyzed and a calibration method was put forward in this paper. The parameter which could calibrate the off-set was chosen in geolocation model according to the geolocation results, which could be modified to realize the calibration for the accuracy geolocation. The mathematical geolocation model of polar orbiting meteorological satellite images was established. The effect of the scanning parameter deviation on geolocation results was analyzed. The calculation formulas of geolocation deviation value induced by different parameter deviation were given out for quantitative analysis, which could be used for geocorrection and error control of sensor design.
