摘要
对空中航位推算(DR)算法做了深入研究,提出了适用于小型无人机(UAV)的风速估计策略;将算法中各元素的误差对推算定位精度的影响进行了理论分析与数值计算;该研究结果应用于某小型UAV的航位推算/GPS组合导航系统的设计与实现中;飞行试验表明,通过提高对DR误差影响较大的元素的测量精度和风速的估计精度,有效提高了DR推算精度,与以往其他小型UAVs相比,在断开GPS对DR的修正后,DR精度保持在一定范围的持续时间显著延长。
The dead reckoning （DR）method is studied in detail and put forward the wind estimation strategy suitable for low-cost small UAVs. The influences of the errors of the measured or estimated data on DR result error are analyzed and calculated numerically. The research result is applied in the design and realization processing of the DR/GPS integrated navigation system for the small UAV. Flight verification tests show that compared with the other models of small UAVs before, DR system could keep the accuracy within some scope in a much longer time during GPS outage through improving the measurement accuracy of the main factors and the wind estimated accuracy.
出处
《火力与指挥控制》
CSCD
北大核心
2007年第5期8-11,15,共5页
Fire Control & Command Control
