电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2014年
2期
218-223
,共6页
张同双%钟德安%潘良%王二建%郭敬明
張同雙%鐘德安%潘良%王二建%郭敬明
장동쌍%종덕안%반량%왕이건%곽경명
船体姿态%星敏感器%观测模型%误差模型
船體姿態%星敏感器%觀測模型%誤差模型
선체자태%성민감기%관측모형%오차모형
ship attitude%star sensor%observation model%error model
为提高船用星敏感器姿态测量精度，对星敏感器船体姿态测量误差模型进行了理论分析。首先针对船用星敏感器的使用环境构建了船用星敏感器观测模型，然后推导了基于角度测量的船用星敏感器误差模型，最后仿真分析了星敏感器地平滚动角测量误差、安装角度对船体姿态测量精度的影响。误差模型与仿真结果表明，星敏感器地平姿态测量误差、安装角度标定误差以及安装布局等是影响船体姿态测量精度的主要因素，其中当星敏感器地平滚动角测量误差为100义时，船体姿态测量误差最大可达112义；安装布局对船体姿态测量精度有一定的影响，其中船体姿态测量误差随安装方位角的变化而呈周期性振荡趋势，纵摇测量误差随安装仰角的增加而增大；当星敏感器沿艏艉线方向安装时，航向测量误差随安装仰角的增加而增大，当沿垂直于艏艉线方向布局时，横摇测量误差随安装仰角的增加而增大。
為提高船用星敏感器姿態測量精度，對星敏感器船體姿態測量誤差模型進行瞭理論分析。首先針對船用星敏感器的使用環境構建瞭船用星敏感器觀測模型，然後推導瞭基于角度測量的船用星敏感器誤差模型，最後倣真分析瞭星敏感器地平滾動角測量誤差、安裝角度對船體姿態測量精度的影響。誤差模型與倣真結果錶明，星敏感器地平姿態測量誤差、安裝角度標定誤差以及安裝佈跼等是影響船體姿態測量精度的主要因素，其中噹星敏感器地平滾動角測量誤差為100義時，船體姿態測量誤差最大可達112義；安裝佈跼對船體姿態測量精度有一定的影響，其中船體姿態測量誤差隨安裝方位角的變化而呈週期性振盪趨勢，縱搖測量誤差隨安裝仰角的增加而增大；噹星敏感器沿艏艉線方嚮安裝時，航嚮測量誤差隨安裝仰角的增加而增大，噹沿垂直于艏艉線方嚮佈跼時，橫搖測量誤差隨安裝仰角的增加而增大。
위제고선용성민감기자태측량정도，대성민감기선체자태측량오차모형진행료이론분석。수선침대선용성민감기적사용배경구건료선용성민감기관측모형，연후추도료기우각도측량적선용성민감기오차모형，최후방진분석료성민감기지평곤동각측량오차、안장각도대선체자태측량정도적영향。오차모형여방진결과표명，성민감기지평자태측량오차、안장각도표정오차이급안장포국등시영향선체자태측량정도적주요인소，기중당성민감기지평곤동각측량오차위100의시，선체자태측량오차최대가체112의；안장포국대선체자태측량정도유일정적영향，기중선체자태측량오차수안장방위각적변화이정주기성진탕추세，종요측량오차수안장앙각적증가이증대；당성민감기연수미선방향안장시，항향측량오차수안장앙각적증가이증대，당연수직우수미선방향포국시，횡요측량오차수안장앙각적증가이증대。
In order to improve the precision of ship-borne star sensor, the attitude error model is theoretical analyzed in this paper. Firstly, in view of the actual working environment on the ship, the observation model of ship-borne star sensor is constructed. Then the error model expressions based on angle observa-tion are deduced. Finally, the horizontal roll angle error and installation angle of ship-borne star sensor that can influence the ship attitude precision are analyzed by simulation. The results of theoretical analysis and simulation indicate that the horizontal roll angle measurement error, the calibration error of installation angle and the installation layout of the ship-borne star sensor on the ship are the main factors of the ship attitude measurement precision. For example, as the horizontal roll angle error is 100", the ship attitude error can reach 112". The installation layout of the ship-borne star sensor has some effects on precision, in which the ship attitude error oscillates with increasing installation azimuth, the pitch angle error increases with installation elevation. When the star sensor is arranged along the fore and aft line, the course error in-creases with the increasing installation elevation, and when orthogonal to the fore and aft line, the ship roll error increases with the increasing installation elevation.
