指挥信息系统与技术
指揮信息繫統與技術
지휘신식계통여기술
COMMAND INFORMATION SYSTEM AND TECHNOLOGY
2012年
1期
54-58
,共5页
空间配准%系统误差%可观测性%病态矩阵
空間配準%繫統誤差%可觀測性%病態矩陣
공간배준%계통오차%가관측성%병태구진
spatial registration%system error%observability%illness matrix
在地心地固（ECEF）坐标系下，推导了传感器测量系统误差的状态方程和测量方程；从线性时变系统能观性理论引出了系统误差可观测性定义，并给出了可观测性的度量方法；讨论了两种典型的低可观测情况，并根据各自特点提出了相应的解决方法。最后，用一个案例仿真证明了相关结论。
在地心地固（ECEF）坐標繫下，推導瞭傳感器測量繫統誤差的狀態方程和測量方程；從線性時變繫統能觀性理論引齣瞭繫統誤差可觀測性定義，併給齣瞭可觀測性的度量方法；討論瞭兩種典型的低可觀測情況，併根據各自特點提齣瞭相應的解決方法。最後，用一箇案例倣真證明瞭相關結論。
재지심지고（ECEF）좌표계하，추도료전감기측량계통오차적상태방정화측량방정；종선성시변계통능관성이론인출료계통오차가관측성정의，병급출료가관측성적도량방법；토론료량충전형적저가관측정황，병근거각자특점제출료상응적해결방법。최후，용일개안례방진증명료상관결론。
State equations and measurement equations for system errors of the sensors measure- ment are deduced in the earth-centered earth-fixed （ECEF） coordinate system and the observabil- ity definition for system errors is given by using the observability theory of the linear time-vary- ing control system. In addition, the measurement method for the observability is obtained. Then, two typical situations with low observability are discussed and algorithms for the system errors are proposed. Finally, a simulation experiment proves the conclusion.
