REG NASA-LLIS-1355--2003 Lessons Learned ADEOS-II NGN L0 Data Gap Introduction Problem.pdf

1、Lessons Learned Entry: 1355Lesson Info:a71 Lesson Number: 1355a71 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: Maintain configuration control, maintain identical configurations for multiple site installationsRecommendation(s): Conduct periodic audit of operational configurations including system patch levels and parameter settings. Evidence of Recurrence Control Effecti

5、veness: N/ADocuments Related to Lesson: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Mission Directorate(s): a71 ScienceAdditional Key Phrase(s): a71 Configuration Managementa71 Ground Equipmenta71 Ground Operationsa71 Information Technology/Systemsa71 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-,-,-