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Unique operations for a highly inclined, elliptical, geosynchronous satellite

机译:高度倾斜,椭圆形,地球同步卫星的独特操作

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摘要

The first space segment devoted to a Digital Audio Radio Service (DARS) for the Continental United States (CONUS) was established when the last satellite of a three satellite constellation (Flight Models FM-1, FM-2 and FM-3) was launched in November 2000. Each satellite is in a highly inclined, elliptical, geosynchronous orbit that is separated by 120° in Right Angle of the Ascending Node (RAAN) from the other two satellites' orbits. This results in an 8 h phasing in ground track between each satellite. These distinct orbits provide superior look angles and signal availability to mobile receivers in the northern third of the United States when compared to geostationary satellites. However, this unique orbital constellation results in some particular performance and operational differences from geostationary orbit satellites. Some of these are: Earth Sensor noise, maneuver implementation and power management. Descriptions and performance improvements of these orbit specific operations are detailed herein.
机译:当发射三个卫星星座(飞行模型FM-1,FM-2和FM-3)中的最后一颗卫星时,就建立了专门用于美国大陆(CONUS)数字音频无线电服务(DARS)的空间部分。在2000年11月,每颗卫星都处于高度倾斜的椭圆形地球同步轨道,与其他两颗卫星的轨道在上升节点的直角(RAAN)中相隔120°。这样一来,每颗卫星之间的地面航迹将相距8小时。与对地静止卫星相比,这些独特的轨道为美国北部三分之一的移动接收器提供了出色的视角和信号可用性。但是,这种独特的轨道星座会导致与对地静止轨道卫星的某些特殊性能和操作差异。其中一些是:地面传感器噪声,机动实施和电源管理。这些轨道特定操作的描述和性能改进在本文中详细描述。

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