Efficient sampling grid-point approach for calculating regional coverage of satellite constellation
Qin Rui-ji · Jisuanji yingyong yanjiu · 2015
The conventional grid-point approach for calculating regional coverage of satellite constellation is time-consuming and inefficient. Based on sampling theory,this paper proposed a sampling grid-point simulation approach,and presented sampling grid-point approach for calculating coverage in two different types of accuracy requirements. Moreover,it proposed the error estimation approach for calculating coverage,which made it possible to quantitatively adjust the grid size to control the computing time and calculation error according to confidence and accuracy requirements and avoid resource waste due to aimless adjustment. Simulation results show that apply the sampling approach to the grid-point approach is feasible and effective.In addition,compared with traditional grid-point approach,the computational efficiency of the proposed algorithm is 81 times faster without decreasing the computational accuracy,which significantly improves the computational efficiency of regional coverage.