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NOAA KLM User's GuideSection 8.3.1.7.3.2 |
Introduction Page, NOAA KLM TOC, AcronymsThe AMSU-B Data Records format for NOAA-N (version 3, post-April 28, 2005, all satellites) is documented in Table 8.3.1.7.3.2-1. See the legend in Section 8.3.1.1 for further explanation of the headings on this table.
| Field Name | Start Octet | End Octet | Data Type | Word Size | Number of Words | Scale Factor | Units | Notes |
|---|---|---|---|---|---|---|---|---|
| Scan Line Number (cumulative, starting with 1) | 1 | 2 | u | 2 | 1 | 0 | ||
| Scan Line Year (e.g., 1999) | 3 | 4 | u | 2 | 1 | 0 | ||
| Scan Line Day of Year (e.g., 365) | 5 | 6 | u | 2 | 1 | 0 | ||
| Satellite Clock Drift Delta | 7 | 8 | i | 2 | 1 | 0 | milliseconds | |
| Scan Line UTC Time of Day | 9 | 12 | u | 4 | 1 | 0 | milliseconds | |
| Scan Line Bit Field bit 15: satellite direction (0 = northbound data; 1 = southbound data) bit 14: clock drift correction (0 = not corrected; 1 = scan time corrected) bits 13 - 0: <zero fill> |
13 | 14 | u | 2 | 1 | 0 | ||
| Major Frame Count (cumulative, starting with 1) | 15 | 16 | u | 2 | 1 | 0 | ||
| <Zero Fill> | 17 | 24 | i | 4 | 2 | 0 | ||
| QUALITY INDICATORS | ||||||||
| Quality Indicator Bit Field (If a bit is on (=1) then the statement is true.) bit 31: do not use scan for product generation bit 30: time sequence error detected within this scan (see below) bit 29: data gap precedes this scan bit 28: insufficient data for calibration (see below) bit 27: earth location data not available (see below) bit 26: first good time following a clock update (nominally 0) bit 25: instrument status changed with this scan bits 24 - 7: <zero fill> bit 6: "new" bias status change (0 = no status change detected in preceding or following scan; 1 = "new" bias calibration uncertain) bit 5: "new" bias status (1 = "new" bias correction on) bit 4: transmitter status change occurred bit 3: AMSU sync error detected bit 2: AMSU minor frame error detected bit 1: AMSU major frame error detected bit 0: AMSU parity error detected |
25 | 28 | u | 4 | 1 | 0 | ||
| Scan Line Quality Flags [Additional Calibration Problem Code] (If a bit is on (=1) then the statement
is true. See "Scan Line Quality Flags [Calibration Problem Code]", below.) bit 7: scan line contains one or more space views that are lunar contaminated bit 6: lunar-contaminated scan line was able to be calibrated (only applicable if the previous flag [bit 7] is 1; otherwise, zero) bits 5-0: <zero fill> |
29 | 29 | u | 1 | 1 | 0 | ||
| Scan Line Quality Flags [Time Problem Code] (If a bit is on (=1), the statement is true. All bits off
implies the scan time is as expected.) bit 7: time field is bad but can probably be inferred from the previous good time. bit 6: time field is bad and can't be inferred from the previous good time. bit 5: this record starts a sequence that is inconsistent with previous times (i.e., there is a time discontinuity). This may be associated with a spacecraft clock update. (See bit 26, Quality Indicator Bit Field.) bit 4: start of a sequence that apparently repeats scan times that have been previously accepted. bits 3-0: <zero fill> |
30 | 30 | u | 1 | 1 | 0 | ||
| Scan Line Quality Flags [Calibration Problem Code] (If a bit is on (=1), the statement is true.
These bits, along with those in "Scan Line Quality Flags [Additional Calibration Problem Code]",
complement the channel indicators; all bits set to 0 indicates normal calibration.) bit 7: Scan line was not calibrated because of bad time. bit 6: Scan line was calibrated using fewer than the preferred number of scan lines because of proximity to start or end of data set or to a data gap. bit 5: Scan line was not calibrated because of bad or insufficient PRT data. bit 4: Scan line was calibrated but with marginal PRT data. bit 3: Some uncalibrated channels on this scan. (See channel indicators.) bit 2: Uncalibrated due to instrument mode. bit 1: Questionable calibration because of antenna position error of space view. bit 0: Questionable calibration because of antenna position error of blackbody view. |
31 | 31 | u | 1 | 1 | 0 | ||
| Scan Line Quality Flags[Earth Location Problem Code] (If a bit is on (=1), the statement is true. All
bits set to 0 implies the earth location was normal.) bit 7: Not earth located because of bad time; earth location fields zero filled. bit 6: Earth location questionable: questionable time code. (See time problem flags above.) bit 5: Earth location questionable: marginal agreement with reasonableness check. bit 4: Earth location questionable: fails reasonableness check. bit 3: Earth location questionable because of antenna position check bits 2-0: <zero fill> |
32 | 32 | u | 1 | 1 | 0 | ||
| Calibration Quality Flags (all bits off implies a good calibration) Word 1: Channel 16 (all bits off implies a good calibration) bits 15 - 6: <zero fill> bit 5: All bad blackbody counts for scan line bit 4: All bad space view counts for scan line bit 3: All bad PRTs for this line bit 2: Marginal blackbody view counts for this line bit 1: Marginal space view counts for this line bit 0: Marginal PRT temps on this line Words 2 - 5: Channels 17-20 (in order) |
33 | 42 | u | 2 | 5 | 0 | ||
| <Zero Fill> | 43 | 60 | i | 2 | 9 | 0 | ||
| CALIBRATION COEFFICIENTS | ||||||||
| Note: The following coefficients are only available in Scan Normal and Investigation modes, otherwise the coefficient fields are <Zero Fill>. Refer to Digital A Housekeeping Telemetry, Digital Data Word A02 for the current mode. | ||||||||
| Primary Calibration Ch 16 Second Order Term, a2 | 61 | 64 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch 16 First Order Term, a1 | 65 | 68 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch 16 Zeroth Order Term, a0 | 69 | 72 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch 17 Second Order Term, a2 | 73 | 76 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch 17 First Order Term, a1 | 77 | 80 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch 17 Zeroth Order Term, a0 | 81 | 84 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch 18 Second Order Term, a2 | 85 | 88 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch 18 First Order Term, a1 | 89 | 92 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch 18 Zeroth Order Term, a0 | 93 | 96 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch 19 Second Order Term, a2 | 97 | 100 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch 19 First Order Term, a1 | 101 | 104 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch 19 Zeroth Order Term, a0 | 105 | 108 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch 20 Second Order Term, a2 | 109 | 112 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch 20 First Order Term, a1 | 113 | 116 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch 20 Zeroth Order Term, a0 | 117 | 120 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch 16 Second Order Term, a2 | 121 | 124 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch 16 First Order Term, a1 | 125 | 128 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch 16 Zeroth Order Term, a0 | 129 | 132 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch 17 Second Order Term, a2 | 133 | 136 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch 17 First Order Term, a1 | 137 | 140 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch 17 Zeroth Order Term, a0 | 141 | 144 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch 18 Second Order Term, a2 | 145 | 148 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch 18 First Order Term, a1 | 149 | 152 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch 18 Zeroth Order Term, a0 | 153 | 156 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch 19 Second Order Term, a2 | 157 | 160 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch 19 First Order Term, a1 | 161 | 164 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch 19 Zeroth Order Term, a0 | 165 | 168 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch 20 Second Order Term, a2 | 169 | 172 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch 20 First Order Term, a1 | 173 | 176 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch 20 Zeroth Order Term, a0 | 177 | 180 | i | 4 | 1 | 6 | ||
| <Zero Fill> | 181 | 190 | i | 2 | 5 | 0 | ||
| NAVIGATION | ||||||||
| Total Applied Attitude Correction Word 1: Roll Word 2: Pitch Word 3: Yaw |
191 | 196 | i | 2 | 3 | 3 | degrees | |
| Navigation Status Bit Field bits 31 - 18: <zero fill> bit 17: earth location at the satellite subpoint is accurate and reasonable; i.e., is within tolerance defined by "Nadir Earth location Tolerance" in header (0 = out of tolerance; 1= in tolerance) bit 16: earth location corrected for Euler angles (0 = FALSE; 1 = TRUE) bits 15 - 12: earth location indicator (0 = earth location available; 1 = user ephemeris files greater than 24 hours old; 2 = no earth location available) bits 11 - 8: spacecraft attitude control (0 = operating in YGC or NOMINAL mode; 1 = operating in another mode; 2 = attitude exceeds nominal tolerance; 3 = both 1 and 2) bits 7 - 4: attitude SMODE (0 = NOMINAL mode; 1 = rate nulling mode; 2 = YGC mode; 3 = search mode; 4 = coast mode) bits 3 - 0: attitude PWTIP$AC (0 = NOMINAL mode/no test; 1 = yaw axis test in progress; 2 = roll axis test in progress; 3 = pitch axis test in progress) |
197 | 200 | u | 4 | 1 | 0 | ||
| Time Associated with Euler Angles | 201 | 204 | i | 4 | 1 | 0 | seconds | |
| Euler Angles Word 1: Roll Word 2: Pitch Word 3: Yaw |
205 | 210 | i | 2 | 3 | 3 | degrees | |
| Spacecraft Altitude above Reference Ellipsoid | 211 | 212 | u | 2 | 1 | 1 | km | |
| Angular Relationships (relative azimuth range +/- 180.00 degrees) Word 1: Solar Zenith Angle, Position 1 Word 2: Satellite Zenith Angle, Position 1 Word 3: Relative Azimuth Angle, Position 1 Word 4: Solar Zenith Angle, Position 2 ... (set of 3 angles for every position) ... Word 270: Relative Azimuth Angle, Position 90 |
213 | 752 | i | 2 | 270 | 2 | degrees | |
| Earth Location (North latitude and East longitude are positive) Word 1: Latitude, FOV 1 Word 2: Longitude, FOV 1 Word 3: Latitude, FOV 2 ... (lat/lon word pair for every FOV) ... Word 180: Longitude, FOV 90 |
753 | 1472 | i | 4 | 180 | 4 | degrees | |
| Lunar Angles (angles between moon and individual space views; range 0 to 180.00 degrees.) Word 1: Angle between moon and space view 1 Word 2: Angle between moon and space view 2 Word 3: Angle between moon and space view 3 Word 4: Angle between moon and space view 4 |
1473 | 1480 | u | 2 | 4 | 2 | degrees | |
| AMSU-B SENSOR DATA | ||||||||
| Scene Data Word 1: Shaft Position for FOV 1 Words 2-6: Scene Counts FOV 1, channels 16-20 (in order) Word 7: Shaft Position for FOV 2 Words 8-12: Scene counts for FOV 2, channels 16-20 (in order) ... (six words for every FOV) ... Word 535: Shaft position for FOV 90 Words 536-540: Scene Counts for FOV 90, channels 16-20 (in order) |
1481 | 2560 | u | 2 | 540 | 0 | counts | |
| <Zero Fill> | 2561 | 2568 | i | 4 | 2 | 0 | ||
| CALIBRATION DATA | ||||||||
| Space View Data Word 1: Shaft Position for Space View 1 Words 2-6: Scene counts for Space View 1, channels 16-20 (in order) Word 7: Shaft Position for Space View 2 Words 8-12: Scene counts for space view 2, channels 16-20 (in order) Word 13: Shaft position for space view 3 Words 14-18: Scene counts for space view 3, channel 16-20 (in order) Word 19: Shaft position for space view 4 Word 20-24: Scene counts for space view 4, channels 16-20 (in order) |
2569 | 2616 | u | 2 | 24 | 0 | counts | |
| Target View Data Word 1: Shaft Position for Target View 1 Words 2-6: Counts for Target View 1, channels 16-20 (in order) Word 7: Shaft Position for Target View 2 Words 8-12: Counts for Target View 2, channels 16-20 (in order) Word 13: Shaft Position for Target View 3 Words 14-18: Counts for Target View 3, channels 16-20 (in order) Word 19: Shaft Position for Target View 4 Words 20-24: Counts for Target View 4, channels 16-20 (in order) |
2617 | 2664 | u | 2 | 24 | 0 | counts | |
| <Zero Fill> | 2665 | 2672 | i | 4 | 2 | 0 | ||
| DIGITAL A HOUSEKEEPING TELEMETRY | ||||||||
| Invalid Data Bit Flags (If bit = 1, associated telemetry words are not valid, i.e., they are zero-filled,
possibly due to lost frames.) bits 31 - 1: <zero fill> bit 0: Digital Data Words A01 through A02 |
2673 | 2676 | u | 4 | 1 | 0 | ||
| <Reserved> | 2677 | 2680 | i | 4 | 1 | 0 | ||
| Digital Data Words A01 (unit ID and flags) bits 15 - 13: <not defined> bit 12: processor check flag (0 = built-in-test passed; 1 = built-in-test failed) bit 11: scan control status (0 = running; 1 = aborted) bit 10: pixel data invalid flag (0 = valid; 1 = invalid) bit 9: scan synchronization (0 = error < 0.1 degree at 8 second sync pulse;1 = error >= 0.1 degree at 8 second sync pulse) bit 8: mode transition flag (0 = transition complete; 1 = transition in progress) bit 7: module ID (msb) bits 6 - 1: module ID bit 0: | 2681 | 2682 | u | 2 | 1 | 0 | ||
| Digital Data Words A02 (digital B telemetry) bit 15: RAM check flag (0 = passed; 1 = failed) bit 14: ROM check flag (0 = passed; 1 = failed) bit 13: Memory checks status (0 = disabled; 1 = enabled) bit 12: Space view select (lsb) bit 11: Space view select (msb) bit 10: Channel 18/19/20 (Relay 5 status) (0 = off; 1 = on) bit 9: Channel 17 (Relay 4 status) (0 = off; 1 = on) bit 8: Channel 16 (Relay 4 status) (0 = off; 1 = on) bit 7: Stepped mode (0 = no; 1 = yes) bit 6: Investigation mode (0 = no; 1 = yes) bit 5: Parked in space view mode (0 = no; 1 = yes) bit 4: Parked in nadir view mode (0 = no; 1 = yes) bit 3: Parked in target view mode (0 = no; 1 = yes) bit 2: Scan Normal mode (0 = no; 1 = yes) bit 1: Survival heater (Relay 2 status) (0 = off; 1 = on) bit 0: Power (Relay 1 status) (0 = off; 1 = on) |
2683 | 2684 | u | 2 | 1 | 0 | ||
| Mixer 16 Temperature | 2685 | 2686 | i | 2 | 1 | 0 | counts | |
| Mixer 17 Temperature | 2687 | 2688 | i | 2 | 1 | 0 | counts | |
| Mixer 18/19/20 Temperature | 2689 | 2690 | i | 2 | 1 | 0 | counts | |
| FET Amplifier 16 Temperature | 2691 | 2692 | i | 2 | 1 | 0 | counts | |
| FET Amplifier 17 Temperature | 2693 | 2694 | i | 2 | 1 | 0 | counts | |
| FET Amplifier 18 Temperature | 2695 | 2696 | i | 2 | 1 | 0 | counts | |
| FET Amplifier 19 Temperature | 2697 | 2698 | i | 2 | 1 | 0 | counts | |
| FET Amplifier 20 Temperature | 2699 | 2700 | i | 2 | 1 | 0 | counts | |
| Calibration Target Temperature 1 | 2701 | 2702 | i | 2 | 1 | 0 | counts | |
| Calibration Target Temperature 2 | 2703 | 2704 | i | 2 | 1 | 0 | counts | |
| Calibration Target Temperature 3 | 2705 | 2706 | i | 2 | 1 | 0 | counts | |
| Calibration Target Temperature 4 | 2707 | 2708 | i | 2 | 1 | 0 | counts | |
| Calibration Target Temperature 5 | 2709 | 2710 | i | 2 | 1 | 0 | counts | |
| Calibration Target Temperature 6 | 2711 | 2712 | i | 2 | 1 | 0 | counts | |
| Calibration Target Temperature 7 | 2713 | 2714 | i | 2 | 1 | 0 | counts | |
| Sub-reflector Temperature 1 | 2715 | 2716 | i | 2 | 1 | 0 | counts | |
| Local Oscillator Monitor Current 16 | 2717 | 2718 | i | 2 | 1 | 0 | counts | |
| Local Oscillator Monitor Current 17 | 2719 | 2720 | i | 2 | 1 | 0 | counts | |
| Local Oscillator Monitor Current 18/19/20 | 2721 | 2722 | i | 2 | 1 | 0 | counts | |
| Local Oscillator 16 Temperature | 2723 | 2724 | i | 2 | 1 | 0 | counts | |
| Local Oscillator 17 Temperature | 2725 | 2726 | i | 2 | 1 | 0 | counts | |
| Local Oscillator 18/19/20 Temperature | 2727 | 2728 | i | 2 | 1 | 0 | counts | |
| PRT Bridge Voltage | 2729 | 2730 | i | 2 | 1 | 0 | counts | |
| PRT Board Temperature (A26) | 2731 | 2732 | i | 2 | 1 | 0 | counts | |
| <Zero Fill> | 2733 | 2744 | i | 4 | 3 | 0 | ||
| ANALOG HOUSEKEEPING TELEMETRY | ||||||||
| Analog Telemetry Update Flags (If bit = 1, associated telemetry words were not updated during
most recent minor frame cycle - possibly due to lost frame) bits 31 - 28: <zero fill> bit 27: SARR-B power bit 26: SARR-A power bit 25: STX-3 power bit 24: STX-2 power bit 23: STX-1 power bit 22: STX-4 status bit 21: STX-3 status bit 20: STX-2 status bit 19: STX-1 status bit 18: ch 18/19/20 LO temperature bit 17: ch 17 LO temperature bit 16: ch 16 LO temperature bit 15: scan motor current bit 14: scan motor temperature bit 13: PSU temperature bit 12: PEU temperature bit 11: MDE temperature bit 10: ICE temperature bit 9: +5V reference secondary bit 8: -5V (A) secondary bit 7: +5V (A) secondary bit 6: +5V (D) secondary bit 5: +8V (A) secondary bit 4: -15V (A) secondary bit 3: +15V (A) secondary bit 2: -12V (A) secondary bit 1: +12V (A) Secondary bit 0: <zero fill> |
2745 | 2748 | u | 4 | 1 | 0 | ||
| +12V (A) Secondary | 2749 | 2750 | i | 2 | 1 | 0 | counts | |
| -12V (A) Secondary | 2751 | 2752 | i | 2 | 1 | 0 | counts | |
| +15V (A) Secondary | 2753 | 2754 | i | 2 | 1 | 0 | counts | |
| -15V (A) Secondary | 2755 | 2756 | i | 2 | 1 | 0 | counts | |
| +8V (A) Secondary | 2757 | 2758 | i | 2 | 1 | 0 | counts | |
| +5V (D) Secondary | 2759 | 2760 | i | 2 | 1 | 0 | counts | |
| +5V (A) Secondary | 2761 | 2762 | i | 2 | 1 | 0 | counts | |
| -5V (A) Secondary | 2763 | 2764 | i | 2 | 1 | 0 | counts | |
| +5V Reference Secondary | 2765 | 2766 | i | 2 | 1 | 0 | counts | |
| ICE Temperature | 2767 | 2768 | i | 2 | 1 | 0 | counts | |
| MDE Temperature | 2769 | 2770 | i | 2 | 1 | 0 | counts | |
| PEU Temperature | 2771 | 2772 | i | 2 | 1 | 0 | counts | |
| PSU Temperature | 2773 | 2774 | i | 2 | 1 | 0 | counts | |
| Scan Motor Temperature | 2775 | 2776 | i | 2 | 1 | 0 | counts | |
| Scan Motor Current | 2777 | 2778 | i | 2 | 1 | 0 | counts | |
| Ch 16 LO Temperature | 2779 | 2780 | i | 2 | 1 | 0 | counts | |
| Ch 17 LO Temperature | 2781 | 2782 | i | 2 | 1 | 0 | counts | |
| Ch 18/19/20 LO Temperature | 2783 | 2784 | i | 2 | 1 | 0 | counts | |
| STX-1 Status | 2785 | 2786 | i | 2 | 1 | 0 | counts | |
| STX-2 Status | 2787 | 2788 | i | 2 | 1 | 0 | counts | |
| STX-3 Status | 2789 | 2790 | i | 2 | 1 | 0 | counts | |
| STX-4 Status | 2791 | 2792 | i | 2 | 1 | 0 | counts | |
| STX-1 Power | 2793 | 2794 | i | 2 | 1 | 0 | counts | |
| STX-2 Power | 2795 | 2796 | i | 2 | 1 | 0 | counts | |
| STX-3 Power | 2797 | 2798 | i | 2 | 1 | 0 | counts | |
| SARR-A Power 2 | 2799 | 2800 | i | 2 | 1 | 0 | counts | |
| SARR-B Power 2 | 2801 | 2802 | i | 2 | 1 | 0 | counts | |
| <Zero Fill> | 2803 | 2804 | i | 2 | 1 | 0 | ||
| FILLER | ||||||||
| <Zero Fill> | 2805 | 3072 | i | 4 | 67 | 0 | ||
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