Deployment Location Algorithm of Navigation Base Station Based on GDOP Analysis

摘要

Regional navigation (RNAV) is an important backup and enhancement means of satellite navigation. When satellite navigation is restricted by terrain and electromagnetic interference for a specific area, it has the ability to provide high-precision navigation service. Because the base stations are close to the user, the layout of the base stations have significant impact on the performance of the regional navigation system. When RNAV provides services for the designated area, in order to obtain high positioning accuracy, the reference source must have good geometric distribution. Therefore, this paper proposes a deployable location algorithm based on iterative division of deployable-area to calculate the deploy-able location of the reference source. Firstly, the deployable-area and Served-area are defined in mathematical language, and then the Deployable-area is divided iteratively, according to the principle of the number of stations and GDOP minimization, the optimal deployable location is calculated. The simulation results show that the proposed method can quickly get the deployable position of the reference source with good geometric distribution, and provide important support for the RNAV system to have high precision positioning service capability.