首页>
外国专利>
Passive position determination using two low earth earth orbit satellites
Passive position determination using two low earth earth orbit satellites
展开▼
机译：使用两颗低地球轨道卫星进行被动位置确定
展开▼
页面导航
摘要
著录项
相似文献
摘要
Problem to be solved: to provide a passive position determination method using two low earth orbit satellite satellites. Solution includes at least two satellites having a user terminal, a known location and a known speed, and a gateway for communicating with a user terminal via a satellite (i.e., a base station). The method includes determining a range difference parameter and a range rate difference parameter. The range difference parameter represents the difference between (1) the distance between the first of the satellites and the user terminal and (2) the distance between the second one of the satellites and the user terminal. The range rate difference parameter represents the difference between (a) the relative radial velocity between the first of the satellites and the user terminal and (b) the relative radial velocity between the second one of the satellites and the user terminal. The position of the user terminal on the earth surface is determined based on the satellite's known position, known velocity, range difference parameter and range rate difference parameter. Diagram
展开▼
