星敏感器5000

该星象跟踪仪5000(ST5000)是由NASA用于提供姿态和引导信号到亚轨道火箭和高空气球的装置。

在ST5000是成像装置,其提供独立(”迷失在空间”)的惯性姿态确定,10赫兹星跟踪,并具有嵌入压缩数字成像。姿态确定子系统使用的视图30平方度字段及一个嵌入星表,以确定其视线的赤经和赤纬至约1弧秒。

The star tracking subsystem generates inertial attitude quaternions at 10 Hz. The digital imaging subsystem uses a scheme of "progressive image transmission" in which the image is sent out over a very-low-bandwidth channel, such as a spacecraft telemetry downlink, in such a way that it can be reconstructed "on the fly" and updated as more data arrive. Large (> 1 Mb) useful images can be obtained over a 4-kbit downlink in as little as 10 seconds.

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