The Iridium network uses 66 low earth orbit satellites in polar orbits 485 miles above sea level.

铱网络使用66 低轨卫星在 极地轨道485公里以上的海平面。

Finally, as an example, calculation has been made for an infrared spectrometer on board a polar orbit meteorological satellite.

最后以极轨气象卫星上的红外分光计为例进行了计算。

Since its launch Dec. 14, 2009, the Wide-Field Infrared Survey Explorer has been circling the Earth in a polar orbit and snapping images every 11 seconds.

自2009年12月14日发射升空以来，广角红外线探测望远镜开始环绕绕地球极地轨道并每11秒抓拍一张照片。

The results may be of reference value to the design of some parts of the spectrometer and to the selection of launching window for polar orbit meteorological satellites.

其结果可以提供给分光计某些部份的设计以及极轨气象卫星发射时间的选择作参考。

This article analyzes the status change in the attitude control system when faults appear based on one polar orbit satellite, and provides a method to decide faulty component.

以某极轨对地观测卫星为背景，分析了姿态控制系统中单机部件出现故障时，系统将会出现的状态变化情况，找出故障部件的判定方法；

In most cases, the satellite will rise in the west, cross the observer's meridian, and set in the east, although satellites in a polar orbit can rise or set in any part of the sky!

大多数情况下，人造卫星自观测者的西方升起，经过中天，然后在东方落下，虽然越极轨道人造卫星可以在天空的任意部分升起和落下！

Israel's first 24-hour, all-weather, high-resolution radar satellite, dubbed TechSAR, was inserted into orbit Jan. 21 by an Indian Polar satellite Launch Vehicle (PSLV).

2008年1月21日，以色列的首颗24小时、全天候、高分辨率雷达卫星TechSAR由印度的极轨卫星运载火箭(PSLV)送入轨道。

Polar-orbiting satellites are low-flying satellites circling the earth in a nearly north-south orbit, at several hundred kilometers above the earth.

极地轨道气象卫星以大致南北方向环绕地球运行。它的轨迹离地面约数百公里。