同温层气球平台反向定位系统的研究

反向定位系统是针对驻留型同温层气球平台的一种新型定位系统 ,该系统的基本原理是由接收站的位置计算得出发射机的位置。文章采用卡尔曼滤波的方法 ,建立了反向定位系统的模型 ,给出其滤波算法 ;鉴于地面接收站的位置选择对该系统的定位精度有较大的影响 ,给出地面站选址依据 ,并通过计算、仿真获得一组较为理想的布站方式。此外 ,钟差是系统的一个主要误差源 ,文中对其引起的定位误差进行了分析 ,并给出估算的方法 ;对系统中的传播误差、设备误差也进行了分析。最后 ,对系统建立了仿真模型进行仿真。结果表明 ,该定位系统具有较好的定位精度

Research of Stratosphere Balloon Platform Inverse Positioning System

Inverse positioning system(IPS)is a new type of positioning system for the resident stratosphere balloon platform. The basic principle of IPS is to calculate the position of the radiator with known positions of receivers. In this paper, the calculating model is built based on Kalman Filter method, and the algorithm is given. Since the locations of ground stations have a great influence on positioning accuracy, the selection principle of ground station location is given, and a set of locations with good performance are given after plenty of calculating and simulation. Besides, the asynchronism of clocks is a main source of error, the positioning error caused by it is analyzed, and a way of estimating is given. The transmitting error and the equipment error are also analyzed. In the end, a simulation model is built and the simulation is proceeded, the result shows that the system has higher positioning accuracy.