1 / 7

STARDUST Project CRITICAL EVENTS READINESS REVIEW COMET P/WILD 2 ENCOUNTER

STARDUST Project CRITICAL EVENTS READINESS REVIEW COMET P/WILD 2 ENCOUNTER Communications During Flyby Scott Toro-Allen. JPL: 303-411 AM / 301-427 PM LMA: MSA +1 818 354-1275 08:00 AM - 05:00 PM PST 20 Nov 2003. Stardust Telecom Component Locations. 2 Days Surrounding Closest Approach

chacha
Download Presentation

STARDUST Project CRITICAL EVENTS READINESS REVIEW COMET P/WILD 2 ENCOUNTER

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. STARDUST Project CRITICAL EVENTS READINESS REVIEW COMET P/WILD 2 ENCOUNTER Communications During Flyby Scott Toro-Allen JPL: 303-411 AM / 301-427 PM LMA: MSA +1 818 354-1275 08:00 AM - 05:00 PM PST 20 Nov 2003 CERR - Toro-Allen

  2. Stardust Telecom Component Locations CERR - Toro-Allen

  3. 2 Days Surrounding Closest Approach Downlink HGA; 15800 Bps With 1 Degree HGA “Off Earth Angle” at Encounter Attitude (Offpoint Near 0 at Closest Approach) Uplink MGA Can Support 125 Bps 0.25 Degree Deadband; MCD 3 (15 1/6 Encoding) 70 Meter Station Coverage Closest Approach Downlink on MGA; Carrier Only (See Following Chart) Potential 3 Db Drop on SSPA 1 RF Power Output (Trapped Charge Effect) Uplink MGA Can Support 125 Bps 0.25 Degree Deadband 70 Meter Station Coverage (DSS-14 / DSS-43) Communications Strategy CERR - Toro-Allen

  4. Roll Angle Options CERR - Toro-Allen

  5. Telecom Subsystem Details • Subsystem Performance Is Nominal (Links Are Sized for Worst-case Deadbanding) and Usually Exceeds Predictions • System-Level Fault Protection Detections Are Enabled; Responses Disabled During Encounter with the exception of ULLE and DLLE • ULLE timer is spacecraft-based; DLLE is ground commanded • Component-Level Fault Protection Detection/Responses Enabled • Command Loss Timer Protects Encounter Uplinks Due to Telecom Component Fault Using Odyssey MOI Model • CLT 17 Days Until 12/12; Then Set to 10 Days • 12/17 » 5 Days; 12/19 » 3 Days; 12/20 » 2 Days; 12/28 » 1 Day • 12/31 Through Encounter » 18 Hours • 1/3/04 Set Back to 17 Days CERR - Toro-Allen

  6. TFP Run from STL results - Downlink CERR - Toro-Allen

  7. TFP Run from STL results - Uplink CERR - Toro-Allen

More Related