SPS Effects on Optical and Radio Astronomy

FIGURE 2. Typical One-Day Path of SPS as Seen from ST 300 MHz) to the SPS microwave transmission frequency (2.45 GHz). Further study is required to determine whether communications with the ST will be adversely affected by the SPS. To summarize, the scientific performance of the ST will be somewhat affected by stray light from the SPS specular reflection beam; the need to avoid imaging both the diffuse and specular reflections from the SPS will lead to adverse cost, complexity, and flexibility impacts; and there is a possibility that the ST communication links will be affected by interference from SPS microwave transmissions. In all cases, further study is required to fully define the nature and extent of the possible impacts identified here.

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