1、Lessons Learned Entry: 1353Lesson Info:a71 Lesson Number: 1353a71 Lesson Date: 2003-07-16a71 Submitting Organization: GSFCa71 Submitted by: Bonita SeatonSubject: ADEOS-II NGN L0 Data Gap Introduction Problem Description of Driving Event: In early February 2003, JPL and NASDA reported gaps in Level 0
2、 data 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% dat
3、a recovery. 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 report
4、ed by JPL and NASDA.Lesson(s) Learned: Ensure that data products can be extracted for analysis at each processing step and perform bit-level data analysisRecommendation(s): An operations concept should be developed to determine how the ADEOS-II operations team would perform data analysis. Based on t
5、hat concept, the capability must be provided to either examine data on the system or to make data available to an off-line system for analysis. Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: Provided by IHSNot for ResaleNo reproduction or networking permitted without l
6、icense from IHS-,-,-N/AMission Directorate(s): a71 ScienceAdditional Key Phrase(s): a71 Flight Operationsa71 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-,-,-
