GPS自动归航系统在变化风场中的轨迹

研究全球卫星定位系统（GPS）自动归航系统在恒定风场中归航轨迹的计算，探讨了系统能够达到预定目标点的条件，给出系统在几种风场中的轨迹图。为了进一步验证归航轨迹能否回到预定点，给出了系统的变化风场中的仿真算法，并通过对仿真结果的分析，提出在系统着陆期间利用GPS定位和测速数据实行逆风控制的方案。

The trajectory analysis of GPS automatics homing system in a changing wind

This paper analyses the trajectory of GPS automatics homing system in constant wind fields , and discusses the condition under which the gliding parachute system could reach preassigned location. Certain kinds of changing wind fields are presented, the trajectory of radial homing system in changing wind fields were calculated. In order to find weather the radial homing system could reach preassigned location or divergent, simulating program is given. Through the analyses of results of simulation, the solution about head wind control is presented that GPS orientation technology and the measured data of velocity should be adopted.