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ASF Review

ASF Review. Acquisition Plan. Acquisition Requirements. 3 complete cycles ascending and descending Maximize spatial coverage and coherence Mapping to occur during same period as AIC-1 Use beams S6, S2, S1, EL1 and F1 S3, 4, 5, and 7 as contingency. Acquisition Strategy.

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ASF Review

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  1. ASF Review Acquisition Plan

  2. Acquisition Requirements • 3 complete cycles ascending and descending • Maximize spatial coverage and coherence • Mapping to occur during same period as AIC-1 • Use beams S6, S2, S1, EL1 and F1 • S3, 4, 5, and 7 as contingency

  3. Acquisition Strategy • Sept to Oct 2000, north-looking mode. • Complete ascending and descending coverage. • Maximize fine beam coverage of high priority areas. • Maximize use of S6, followed by S2, S1 and El-1 to increase probability of coherent IFSAR data.

  4. Acquisition Strategy(cont) • OBR data down-linked to N. Hemisphere GRS’s • McMurdo GRS used for real-time data • Minimize complexity • Minimize impact on other users while meeting mission objectives

  5. MAMM-2 Acquisition Plans • Three plans, all identical. First data take: • orbit 73-105, 19:35:57 UTC 3 Sept • orbit 74-105, 19:35:57 UTC 27 Sept • orbit 75-105, 19:35:057 UTC 21 Oct • Any replanning done in first cycle will become “nominal” plan for remaining two

  6. SAR & Station Usage • Total SAR on-time: 1557.6 min • RTM: 936.0 min • OBR: 619.6 • Total Number of Data Acquisitions: 819* • RTM: 531 • OBR: 288 • Fairbanks: 267 • Gatineau: 2 • Prince Albert: 18

  7. Coverage Errata • Standard-5 used on 3 occasions in ascending plan • 172.78056 • 174.77696 • 315.77602 • Complete coverage not attained in descending plan • 4 small holes near Amery Ice Sheet

  8. Replanning Rules • Limited to first cycle (73) • One complete map is highest priority for cycle-73 (may be assembled from asc and desc coverage) • If only partial coverage possible, target high priority areas • Cycle-73, 74 IFSAR coverage over high priority targets more important than complete IFSAR coverage

  9. Replanning Rules(cont) • Acquisition of gaps in AIC-1 IFSAR higher priority than areas already covered n AIC-1 • Acquisition of gaps in ERS Tandem coverage are higher priority than areas covered during Tandem mission

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