3 D Attitude Determination and Accuracy Analysis Based on Multi GPS Receivers

Abstract:

According to a simulated data set,single epoch positioning results by kinematic positioning were obtained,and then the attitude were calculated with various antenna combinations respectively.The results show that when the length of the baseline is about 5m in square,the RMS for Yaw is about ±0.05°,while Roll and Pitch are about ±0.2°.When the length of the baselines is about 10m in square,the RMS for Yaw is about ±0.03°,while Roll and Pitch are about ±0.11°.So the accuracy of the attitude angles has a correlation with the length of the transverse and longitudinal baselines.When the lengths of baselines are the same,the accuracy of Yaw is higher than Roll and Pitch.The accuracy of Yaw and Roll mainly depends on the lengths of the longitudinal baselines,while the accuracy of Pitch transverse denpends on the length of transverse baselines.In general,the longer the baseline is,the higher accuracy of the attitude angles will be.