Research on Navigation Error Estimation Technology Based on Distance Measurement Information of Aircraft Three-dimensional Network
ZHANG Jingjuan1,2, LEI Haodong1,2, WANG Xueyun1,2, QIN Feng3
1. School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China;
2. Hefei Innovation Research Institute, Beihang University,Hefei 230012, Anhui, China;
3. Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China
Abstract This paper aims at the problem of how to improve the navigation and positioning accuracy of the inertial navigation system without satellite navigation and positioning systems, and proposes a navigation error estimation technology based on distance measurement information of aircraft three-dimensional network. By using the inter-aircraft distance measurement information to correct the navigation error of the inertial navigation system, it can significantly improve the navigation and positioning accuracy of the aircraft in the three-dimensional network. First, analyze the principles of aircraft three-dimensional networking navigation, design a system technical plan, and set a navigation effect evaluation method. Second, design a three-dimensional distance measurement navigation error estimation algorithm and build a settlement model. Finally, simulation verification is performed. The simulation results show that: for a network composed of 4 aircrafts, when the distance measurement error is 20 m, after 10 minutes of network navigation flight, the inertial navigation position error can be increased by more than 2 times; when the network also includes a highprecision integrated navigation correction station, after 10 minutes of networking navigation flight, the inertial navigation position error of the aircraft can be increased by an order of magnitude, which verifies the feasibility of the technology.
2020, Vol. 3 
