CAJ | 학술논문

传统的正交坐标系在垂直姿态附近存在信号幅值和信噪比极低等不足，导致姿态解算精度低。分析了传统正交坐标系垂直姿态测量精度不足的内在原因，基于提高原始测量信号幅度及其信噪比的目的，提出一种预置旋转的正交坐标系，研究了其理论模型和测量误差，进行了原理验证。测试及其解算数据表明，预旋转坐标系在垂直姿态时可增强原始信号幅度10倍以上，较大地提高了垂直姿态测量的总体精度。
전통적정교좌표계재수직자태부근존재신호폭치화신조비겁저등불족，도치자태해산정도저。분석료전통정교좌표계수직자태측량정도불족적내재원인，기우제고원시측량신호폭도급기신조비적목적，제출일충예치선전적정교좌표계，연구료기이론모형화측량오차，진행료원리험증。측시급기해산수거표명，예선전좌표계재수직자태시가증강원시신호폭도10배이상，교대지제고료수직자태측량적총체정도。
There are some disadvantages,such as weak signal and low signal-noise ratio (SNR)in conventional orthogonal coordinate system under vertical attitude,which bring about low computation accuracy.Based on the defect analysis of conventional coordinate system in vertical measure-ment,a pre-rotated coordinate system is presented in order to increase the original signal amplitude and the SNR.The theoretical model and its measurement error are investigated and tested.The experiment results and computation data show that this pre-rotated coordinate system can in-crease the original signal amplitude by more than ten times,and greatly improves the overall accuracy of vertical attitude measurement.