一种低成本GPS/DMU组合系统研究

STUDY OF A GPS/DMU INTEGRATEN SYSTEM WITH LOW-COST

基于新型的低成本微型固态惯性测量单元 - DMU( Dynamic Measurement Unit)和GPS系统 ,利用具有良好鲁棒性能的 H∞ 滤波算法 ,设计了一种低成本 GPS/DMU组合导航系统。通过仿真计算对该组合系统的性能进行了分析 ,结果表明 ,新型的组合系统不仅具有良好的性能价格比 ,而且体积小、具有更强的稳定性能 。

Much attention has been given to GPS/INS integrated navigation system in the past few years, but the use of GPS/INS system was limited in many fields due to high cost of INS. A new solid state electronic inertial component, Micro Inertial Measurement Unit (MIMU), is developed, which has the supreme advantage of low cost and small volume, but has low accuracy. An integrated system is designed based on a Dynamic Measurement Unit (DMU) which is one kind of MIMU and a GPS attitude receiver. An H ∞ filtering algorithm is applied to this system, which is used to synthesize the output from GPS and DMU. Some simulations have been carried out, and the results indicate that the integrated system not only has a good high performance to cost ratio, but also has small volume and excellent stability. This system can be used for different flying vehicles.