1. Satellite Number (1:Alouette 1, 2:Alouette 2, 3:ISIS 1, 4:ISIS 2) 2. Station Name (3 letter code) 3. Station Code (2 digit code) 4. Tape Number (5 digit number plus letter to indicate pass order on tape) 5. Pass Number (5 digit number) 6. Start Date and Time of Data Recording (YY/MM/DD [YYDOY] HH:MM:SS) 7. End Date and Time of Data Recording (YY/MM/DD [YYDOY] HH:MM:SS) 8. A/D Conversion Date and Time (YY/MM/DD [YYDOY] HH:MM:SS) 9. Comments From Station Log 10. A/D Operator Comments 11. Number of ionogram headers included in this file (s)
The following will be repeated for each of the ionogram headers:
If a specific word could not be determined during processing then it was omitted.
12. Two Lines Containing Filenames of Files Created (1st header) A36 13. Some Quality Control Comments (Variable number of comments and lengths) Alpha format. 14. Satellite (ISIS 1, ISIS 2, etc.) A6 15. Station (3 LETTER CODE) A3 16. Transmitter Power (400 W (PRI) or 400 W (SEC)) A12 17. Sounder/Receiver (ON/OFF) A3 18. Swept Frequency Range (0.1 - 10 MHz or 0.1 - 20 MHz) A12 19. DMODE (ON/OFF) A3 20. GMODE (ON/OFF) A3 21. Sounder Mixed Mode (ON/OFF) A3 22. AIT Mode (ON/OFF) A3 23. Frequency of Fixed Frequency (MHz) A9 24. Year (Last 2 Digits) (Frame Sync UT) I3 25. Day of Year (Frame Sync UT) I3 26. Hour (Frame Sync UT) I3 27. Minute (Frame Sync UT) I3 28. Second (microseconds) (Frame Sync UT) F10.6 29. LMT (HHMM) (At time of Frame Sync) I4 30. Geographic Latitude (degree) (At time of Frame Sync) F6.2 31. Geographic Longitude (degree) (At time of Frame Sync) F7.2 32. Height (km) (At time of Frame Sync) F6.0 33. Geomagnetic Local Time (HHMM) (At time of Frame Sync) I4 34. Geomagnetic Latitude (degree) (At time of Frame Sync) F6.2 35. Geomagnetic Longitude (degree) (At time of Frame Sync) F7.2 36. Gyro Frequency (MHz) (At time of Frame Sync) F6.3 37. Invariant Latitude (Deg) (At time of Frame Sync) F6.2 38. Dip (Deg) (At time of Frame Sync) I4 39. Solar zenith angle (Deg) (At time of Frame Sync) I5 40. Sunlight (SL/NSL) (At time of Frame Sync) A3 41. L Shell (At time of Frame Sync) F7.2 42. CEP (ON/OFF) A3 43. VLF Receiver (ON/OFF) A3 44. RPA (ON/OFF) A3 45. IMS (ON/OFF) A3 46. SPS (ON/OFF) A3 47. EPD (ON/OFF) A3 48. Red Line Photometer (ON/OFF) {1st header} A3 11+37+1. Two Lines Containing Filenames of Files Created {2nd header} A36 .......... 11+2*37. Red Line Photometer (ON/OFF) {2nd header} A3 ........ 11+(s-1)*37+1. Two Lines Containing Filenames of Files Created {last header} A36 .......... 11+s*37. Red Line Photometer (ON/OFF) {last header} A3 EXAMPLE: -------- 1. Satellite Number: 4 (ISIS 2) 2. Station Name: RES 3. Station Code: 43 4. Tape Number: 02428A01 5. Pass Number: 18403 6. Start Time of Data Recording: 75/03/23 (75082) 19:55:45 7. End Time of Data Recording: 75/03/23 (75082) 20:04:30 8. A/D Conversion Date and Time: 1/01/03 ( 1003) 15:26:14 9. Comments From Station Log: SND ON,VLF OFF,WWV GOOD,A.T.O. AT 200427 10. A/D Operator Comments: GOOD SIGNAL 11. Number of ionogram headers: 38 Subheader for 1st ionogram: 12. IONOGRAMS: A4RES02428A01_18403_75082_195657.BIN F4RES02428A01_18403_75082_195657.BIN 13. Comments: 0 OVERFLOW SCAN LINES SWEPT FREQUENCY SOUNDING 1 FREQUENCY MARKER(S) NOT IDENTIFIED IN VIDEO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 14. SATELLITE: ISIS 2 15. STATION: RES 16. POWER: 400 W (SEC) 17. SNDREC: ON 18. SF: 0.1 - 10 MHz 19. DMODE: ON 20. GMODE: OFF 21. MIXED-MODE: OFF 22. AITMODE: OFF 23. FIXED FREQ: 1.95 MHz 24. YR: 75 25. DAY: 82 26. HR: 19 27. MIN: 56 28. SEC: 57.245000 29. LMT: 1623 30. GGLAT: 67.40 31. GGLONG: -53.61 32. HGT: 1392. 33. GMLTM: 1721 34. GMLAT: 78.28 35. GMLONG: 30.15 36. FH: 0.898 37. INVLAT: 77.26 38. DIP: 81 39. CHI: 79 40. SUN: SL 41. L: 20.57 42. CEP: ON 43. VLF: OFF 44. RPA: ON 45. IMS: ON 46. SPS: OFF 47. EPD: ON 48. RLP: OFF 49. ASP: OFF