| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D100216.6 | GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields | grwvceil25kM1.b1 |
| D100402.3 | GRW/WACR/M1 - Coherence Filter Contamination | grwwacrM1.b1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/13/2009 | 0000 | 10/31/2009 | 2359 |
| Subject: | GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields |
| DataStreams: | grwvceil25kM1.b1 |
| Description: | Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. |
| Measurements: | grwvceil25kM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/09/2009 | 1600 | 04/02/2010 | 1200 |
| Subject: | GRW/WACR/M1 - Coherence Filter Contamination |
| DataStreams: | grwwacrM1.b1 |
| Description: | The coherence filter (software) that was added to the WACR under BCR-01500 was causing occasional contamination to WACR data. This was exhibited in the first 2000 m of range by streaking in the data over a period of time. It didn't occur often and when it did, it is quite obvious looking at the plots. On 4/2/2010 at 12:00 UTC, the coherence filter was modified to preclude working on signals with a SNR greater than 60 dB. The vendor thinks this will solve the problem. |
| Measurements: | grwwacrM1.b1:
|