REG NASA-LLIS-1351-2003 Lessons Learned ADEOS-II L0 Data Gap Introduction Problem.pdf

1、Lessons Learned Entry: 1351Lesson Info:a71 Lesson Number: 1351a71 Lesson Date: 2003-07-16a71 Submitting Organization: GSFCa71 Submitted by: Bonita SeatonSubject: ADEOS-II L0 Data Gap Introduction Problem Description of Driving Event: In early February 2003, JPL and NASDA reported gaps in Level 0 dat

2、a products received from the Wallops and Alaska ADEOS-II Data Processing Systems. Gaps in the SeaWinds product were characterized by JPL to be intermittent in nature, of variable size, and located at irregular intervals in the data products. Reprocessing of the raw data by NASDA yielded 100% data re

3、covery. Thus, while there was 100% data capture, data gaps were introduced by the DS resulting in approximately 8% data loss in the Level 0 product (i.e. 8 out of every 100 minutes of data was not included in the Level 0 product). These gaps were undetected at the processing station until reported b

4、y JPL and NASDA.Lesson(s) Learned: Use independent tools and analysis methods to verify system under test versus or in addition to tools which are part of the system under testRecommendation(s): Provide separate tools for verifying system results or separately plan and conduct tests to verify system

5、 components that will be used in subsequent verification efforts. Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AMission Directorate(s): a71 Exploration Systemsa71 Scie

6、ncea71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Ground Equipmenta71 Ground Operationsa71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 2003-07-29a71 Approval Name: Al Galloa71 Approval Organization: GSFCa71 Approval Phone Number: 301-286-3756Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-