scholarly journals Navigation Performance of the Libration Point Satellite Navigation System in Cislunar Space

2014 ◽  
Vol 68 (2) ◽  
pp. 367-382 ◽  
Author(s):  
Lei Zhang ◽  
Bo Xu
Keyword(s):  
Navigation System ◽  
Libration Point ◽  
Satellite Navigation ◽  
Lunar Exploration ◽  
Performance Study ◽  
Satellite Constellations ◽  
Satellite Navigation System ◽  
Simulation Results ◽  
Exploration Mission ◽  
Navigation Accuracy

Based on the candidate architectures of the libration point satellite navigation system proposed in our previous work, a navigation performance study is conducted in this paper to verify the cislunar navigation ability of the proposed system. Using scalar satellite-to-satellite range measurement between the user and libration point navigation satellites, a virtual lunar exploration mission scenario is developed to verify the navigation performance of the candidate Earth-Moon L1,2,4,5 four-satellite constellations. The simulation results indicate that the libration point satellite navigation system is available for cislunar navigation and the navigation accuracy of a few tens of metres can be achieved for both the trans-lunar cruise and lunar orbit phase. Besides that, it is also found that the navigation accuracy of the libration point satellite navigation system is sensitive to the orbit of the L1 satellite. Once the L1 navigation satellite is located in the Halo orbit or vertical Lyapunov orbit, the proposed system can present a better navigation performance in cislunar space.

scholarly journals Navigation Performance of the Libration Point Satellite Navigation System for Future Mars Exploration

2015 ◽  
Vol 69 (1) ◽  
pp. 41-56 ◽  
Author(s):  
Lei Zhang ◽  
Bo Xu
Keyword(s):  
Navigation System ◽  
Unscented Kalman Filter ◽  
Libration Point ◽  
Satellite Navigation ◽  
Reference Scenario ◽  
Satellite Constellations ◽  
Mars Exploration ◽  
Satellite Navigation System ◽  
System A ◽  
Exploration Mission

Based on the candidate architectures of the libration point satellite navigation system, a Mars navigation performance analysis is conducted in this paper to further verify the feasibility of the Universe Lighthouse. Firstly, a high-fidelity Mars exploration mission is developed as the reference scenario. Then, with the use of a novel adaptive unscented Kalman filter, navigation performance of the candidate Earth-MoonL1,2,4,5four-satellite constellations is evaluated by Monte-Carlo simulations. The final results indicate that the libration point satellite navigation system is available for Mars navigation and the effects of different constellation configurations and measurement types are also compared and analysed.

A Universe Light House — Candidate Architectures of the Libration Point Satellite Navigation System

2014 ◽  
Vol 67 (5) ◽  
pp. 737-752 ◽  
Author(s):  
Lei Zhang ◽  
Bo Xu
Keyword(s):  
Navigation System ◽  
Orbit Determination ◽  
Libration Point ◽  
Satellite Navigation ◽  
Navigation Systems ◽  
Satellite Navigation System ◽  
Libration Point Orbits ◽  
Satellite Constellation ◽  
The Earth ◽  
Autonomous Orbit Determination

In view of the shortcomings of existing satellite navigation systems in deep-space performance, candidate architectures which utilise libration point orbits in the Earth-Moon system are proposed to create an autonomous satellite navigation system for lunar missions. Three candidate constellations are systematically studied in order to achieve continuous global coverage for lunar orbits: the Earth-Moon L1,2 two-satellite constellation, the Earth-Moon L2,4,5 three-satellite constellation and the Earth-Moon L1,2,4,5 four-satellite constellation. After a thorough search for possible configurations, the latter two constellations are found to be the simplest feasible architectures for lunar navigation. Finally, an autonomous orbit determination simulation is performed to verify the autonomy of the system and two optimal configurations are obtained in a comprehensive consideration of coverage and autonomous orbit determination performance.

Performance Analysis of Application Layer FEC to Disaster Warning Distribution Based on COMPASS/Beidou

2011 ◽  
Vol 130-134 ◽  
pp. 3855-3858
Author(s):  
Rui Xue ◽  
Rui Xue Cui ◽  
Xiao Ru Li ◽  
Tong Zhou
Keyword(s):  
Performance Analysis ◽  
Navigation System ◽  
Distribution System ◽  
Satellite Navigation ◽  
Transmission Capacity ◽  
Application Layer ◽  
Satellite Navigation System ◽  
Blind Zone ◽  
Beidou System ◽  
Simulation Results

The COMPASS/Beidou Satellite Navigation System is no-blind zone for China and limited transmission capacity. It is critical for increasing the performance of disaster warning distribution by the COMPASS/Beidou system. By further analyzing the characteristics of transmission of COMPASS/Beidou, we find the method of solving that problem and also introduce some optimizations into the algorithm. The algorithm is based on application layer FEC to achieve the warning transmission probabilities. Simulation results show that the new scheme can efficiently be used disaster warning distribution system.

scholarly journals Research on BeiDou Satellite Positioning Algorithm Based on GPRS Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Li Yang ◽  
Yunhan Zhang ◽  
Haote Ruan
Keyword(s):  
Real Time ◽  
Navigation System ◽  
Satellite Navigation ◽  
Positioning Systems ◽  
Time Dynamic ◽  
Satellite Navigation System ◽  
Satellite Positioning ◽  
Error Elimination ◽  
Wireless Module ◽  
Positioning Algorithm

The BeiDou Satellite Navigation System of China can provide users with high precision, as well as all-weather and real-time positioning and navigation information. It can be widely used in many applications. However, new challenges appear with the expansion of the 5G communication system. To eradicate or weaken the influence of various errors in BeiDou positioning, a BeiDou satellite positioning algorithm based on GPRS technology is proposed. According to the principles of the BeiDou Satellite navigation system, the navigation and positioning data are obtained and useful information are extracted and sent to the communication network through the wireless module. The error is corrected by establishing a real-time kinematic (RTK) mathematical model, and the pseudorange is calculated by carrier phase to further eliminate the relativistic and multipath errors. Based on the results of error elimination, the BeiDou satellite positioning algorithm is improved and the positioning error is corrected. The experimental results show that the positioning accuracy and efficiency of the algorithm can meet the actual needs of real-time dynamic positioning systems.

Sign in / Sign up

Export Citation Format

Share Document