电光与控制
電光與控製
전광여공제
ELECTRONICS OPTICS & CONTROL
2014年
2期
41-45
,共5页
徐梓峰%卢艳娥%庞春雷%王祝欣
徐梓峰%盧豔娥%龐春雷%王祝訢
서재봉%로염아%방춘뢰%왕축흔
捷联惯导系统%角速率%姿态解算%圆锥误差%等效旋转矢量
捷聯慣導繫統%角速率%姿態解算%圓錐誤差%等效鏇轉矢量
첩련관도계통%각속솔%자태해산%원추오차%등효선전시량
SINS%angular velocity%attitude updating%coning error%equivalent rotation vector
在捷联系统中将角速率转换成角增量,再利用传统的基于角增量的圆锥误差补偿算法解算姿态会使精度下降、计算量增大。针对此问题,推导了以角速率为输入的圆锥误差补偿算法,详细推出了三子样算法的具体形式,并在圆锥运动条件下对算法进行优化,进一步提高了算法的精度和可靠性。在典型圆锥运动条件下将所提算法的解算结果和解析解做了仿真比较,结果表明算法有效可行,且优化后的算法精度更高。
在捷聯繫統中將角速率轉換成角增量,再利用傳統的基于角增量的圓錐誤差補償算法解算姿態會使精度下降、計算量增大。針對此問題,推導瞭以角速率為輸入的圓錐誤差補償算法,詳細推齣瞭三子樣算法的具體形式,併在圓錐運動條件下對算法進行優化,進一步提高瞭算法的精度和可靠性。在典型圓錐運動條件下將所提算法的解算結果和解析解做瞭倣真比較,結果錶明算法有效可行,且優化後的算法精度更高。
재첩련계통중장각속솔전환성각증량,재이용전통적기우각증량적원추오차보상산법해산자태회사정도하강、계산량증대。침대차문제,추도료이각속솔위수입적원추오차보상산법,상세추출료삼자양산법적구체형식,병재원추운동조건하대산법진행우화,진일보제고료산법적정도화가고성。재전형원추운동조건하장소제산법적해산결과화해석해주료방진비교,결과표명산법유효가행,차우화후적산법정도경고。
In the strap-down inertial navigation system ( SINS),if the angular rate is converted into angular incremental and the traditional coning error compensation algorithm based on the angular increment is used,the attitude calculation will have a decreased accuracy and increased calculation cost .To solve the problem,a coning error compensation algorithm that taking directly the angular rate as input was proposed . The concrete form of the three-sample-algorithm was given in detail .In order to further improve the accuracy and reliability,the algorithm was optimized under the condition of coning motion .The result of the proposed algorithm was compared with that of the analytical method by simulation under the condition of typical coning motion.The simulation result showed that the proposed algorithm is effective,feasible and has higher accuracy .