|
Example of S-4 Header Record |
| BYTES | DESCRIPTION | EXAMPLE | NOTE |
|---|---|---|---|
| 1-2 | Subsystem Indicator | 7 | The subsystem indicator for the S-4 Output Product will always be 7. |
| 3-4 | Product Code | 1 | The S-4 Output Product Subsystem has artibrarily defined the product code for the tape to be 1 for scanner plus nonscanner processing S-4N, 2 for nonscanner only processing S-4N. |
| 5-6 | Spacecraft Indicator | 2 | A number 1-7 will appear here depending upon whether data is for a single satellite or a combination of satellites. See Table 14. |
| 7-8 | Whole Julian date (high-order part) |
244 | The initial Julian date for this example is 2445700.5000 which corresponds to midnight on January 1, 1984 |
| 9-10 | Whole Julian date (low-order part) |
5700 | The whole Julian date for the first day of the month. |
| 11-12 | Fractional Julian date | 5000 | The fractional Julian date will be 0.5. |
| 13-14 | Processed Version Counter | 1 | A value of 1 means that the S-4 product has been processed one time and not reprocessed. |
| 15-16 | Year Processed | 85 | For this example the S-4 product was processed on February 3, 1985, at 9 p.m. 48m 54s. |
| 17-18 | Month Processed | 2 | |
| 19-20 | Day Processed | 3 | |
| 21-22 | Hour Processed | 21 | |
| 23-24 | Minute Processed | 48 | |
| 25-26 | Second Processed | 54 | |
| 27-30 | Spares | 0 |
