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NOAA KLM User's GuideSection 8.3.1.7.3.1 |
Introduction Page, NOAA KLM TOC, AcronymsThe AMSU-B Data Records format for NOAA KLM (version 2, pre-April 28, 2005) is documented in Table 8.3.1.7.3.1-1. 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: 0 = northbound data; 1 = southbound data bit 14: 1 = scan time corrected for clock drift 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 | 1 | 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: no calibration (see below) bit 27: no earth location (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: 1 = calibration uncertain due to new bias status change bit 5: 0 = no "new" bias occurring for scan; 1 = "new" bias in effect 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 | 1,2 | |
| Scan Line Quality Flags If a bit is on (=1) then the statement is true. Time Problem Code (All bits off implies the scan time is as expected.) bits 31-24: <zero fill> bit 23: time field is bad but can probably be inferred from the previous good time. bit 22: time field is bad and can't be inferred from the previous good time. bit 21: this record starts a sequence that is inconsistent with previous times (i.e., there is a time discontinuity). This may or may not be associated with a spacecraft clock update. (See bit 26 above) bit 20: start of a sequence that apparently repeats times that have been previously accepted. bits 19 - 16: <zero fill> Calibration Problem Code (Note these bits complement the channel indicators; all bits set to 0 indicates normal calibration.) bit 15: Scan line was not calibrated because of bad time. bit 14: 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 13: Scan line was not calibrated because of bad or insufficient PRT data. bit 12: Scan line was calibrated but with marginal PRT data. bit 11: Some uncalibrated channels on this scan. (See channel indicators.) bit 10: Uncalibrated due to instrument mode. bit 9: Questionable calibration because of antenna position error of space view. bit 8: Questionable calibration because of antenna position error of blackbody. Earth Location Problem Code (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 because of questionable time code. (See time problem flags above.) bit 5: Earth location questionable -- only marginal agreement with reasonableness check. bit 4: Earth location questionable -- fails reasonableness check. bit 3: Earth location questionable because of position check [rs060794.doc & rs062094.do1] bits 2-0: <zero fill> |
29 | 32 | u | 4 | 1 | 0 | ||
| Calibration Quality Flags 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, 18, 19, and 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 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 | 196 | i | 4 | 4 | 0 | ||
| NAVIGATION | ||||||||
| Navigation Status Bit Field bits 31 - 17: <zero fill> bit 16: 1 = earth location corrected for TIP Euler angles 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 TIP Euler Angles | 201 | 204 | u | 4 | 1 | 0 | seconds | |
| TIP 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 (local azimuth range +/- 180.00 degrees) Word 1: Solar Zenith Angle, Position 1 Word 2: Satellite Zenith Angle, Position 1 Word 3: Local Azimuth Angle, Position 1 Word 4: Solar Zenith Angle, Position 2 ... (set of 3 angles for every position) ... Word 270: Local Azimuth Angle, Position 90 |
213 | 752 | i | 2 | 270 | 2 | degrees | |
| Earth Location (North latitude and East longitude are positive) Word 1: Latitude, Position 1 Word 2: Longitude, Position 1 Word 3: Latitude, Position 2 ... (lat/lon word pair for every position) ... Word 180: Longitude in Degrees, Position 90 |
753 | 1472 | i | 4 | 180 | 4 | degrees | |
| <Zero Fill> | 1473 | 1480 | i | 4 | 2 | 0 | ||
| AMSU-B SENSOR DATA | ||||||||
| Word 1: Shaft Position for FOV 1 Word 2: Scene Counts FOV 1, Channel 16 Word 3: Scene Counts FOV 1, Channel 17 Word 4: Scene Counts FOV 1, Channel 18 Word 5: Scene Counts FOV 1, Channel 19 Word 6: Scene Counts FOV 1, Channel 20 Word 7: Shaft Position for FOV 2 ... (six words for every field of view) ... Word 540: Scene Counts FOV 90, Channel 20 |
1481 | 2560 | u | 2 | 540 | 0 | counts | |
| <Zero Fill> | 2561 | 2568 | i | 4 | 2 | 0 | ||
| CALIBRATION DATA | ||||||||
| Word 1: Shaft Position for Space View 1 Word 2: Counts for Space View 1, Channel 16 Word 3: Counts for Space View 1, Channel 17 Word 4: Counts for Space View 1, Channel 18 Word 5: Counts for Space View 1, Channel 19 Word 6: Counts for Space View 1, Channel 20 Word 7: Shaft Position for Space View 2 ... (six words per space view) ... Word 24: Counts for Space View 4, Channel 20 |
2569 | 2616 | u | 2 | 24 | 0 | counts | |
| Word 1: Shaft Position for Target View 1 Word 2: Counts for Target View 1, Channel 16 Word 3: Counts for Target View 1, Channel 17 Word 4: Counts for Target View 1, Channel 18 Word 5: Counts for Target View 1, Channel 19 Word 6: Counts for Target View 1, Channel 20 Word 7: Shaft Position for Target View 2 ... (six words per target view) ... Word 24: Counts for Target View 4, Channel 20 |
2617 | 2664 | u | 2 | 24 | 0 | counts | |
| <Zero Fill> | 2665 | 2672 | i | 4 | 2 | 0 | ||
| DIGITAL A TELEMETRY | ||||||||
| Invalid Data Bit Flags (if bit = 1, associated telemetry words were not updated during most recent minor frame cycle - possibly due to lost frame) Word 1: Digital A Telemetry bits 31 - 1: <zero fill> bit 0: Digital Data Words A01 through A26 |
2673 | 2676 | u | 4 | 1 | 0 | ||
| <Zero Fill> | 2677 | 2680 | i | 4 | 1 | 0 | ||
| Digital Data Words A01 and A02 Word 1: Unit ID + Flags (A01) bits 15 - 13: <not defined> bit 12: processor check flag (1 = built-in-test failed) bit 11: scan control status (1 = aborted) bit 10: pixel data invalid flag (1 = invalid) bit 9: scan synchronization (1 = error >= 0.1 deg) bit 8: mode transition flag (1 = transition in progress) bit 7: module ID (msb) (see below) bits 6 - 1: module ID bit 0: module ID (lsb) (Module ID: 0=EM; 4=PFM; 8=FM2; 12=FM3) Word 2: Digital B Telemetry (A02) bit 15: RAM check flag (1 = failed) bit 14: ROM check flag (1 = failed) bit 13: Memory checks status (1 = enabled) bit 12: Space view select (lsb) bit 11: Space view select (msb) (Space view select, value from msb in high bit: 0 = centered on -157 deg from +Z; 1 = -161 deg; 2 = -165 deg; 3 = -169 deg) bit 10: Channel 18/19/20 ON/OFF (Relay 5 status, 1=on) bit 9: Channel 17 ON/OFF (Relay 4 status, 1 = on) bit 8: Channel 16 ON/OFF (Relay 4 status, 1 = on) bit 7: Stepped mode (1 = yes) bit 6: Investigation mode (1 = yes) bit 5: Parked in space view mode (1 = yes) bit 4: Parked in nadir view mode (1 = yes) bit 3: Parked in target view mode (1 = yes) bit 2: Scan Normal mode (1 = yes) bit 1: Survival heater ON/OFF (Relay 2 status, 1 = on) bit 0: Power ON/OFF (Relay 1 status, 1 = on) |
2681 | 2684 | u | 2 | 2 | 0 | ||
| Digital Data Words A03 through A26 (in order) Word 1: Mixer 16 Temperature (A03) Word 2: Mixer 17 Temperature Word 3: Mixer 18/19/20 Temperature Word 4: FET Amplifier 16 Temperature Word 5: FET Amplifier 17 Temperature Word 6: FET Amplifier 18 Temperature Word 7: FET Amplifier 19 Temperature Word 8: FET Amplifier 20 Temperature Word 9: Calibration Target Temperature 1 Word 10: Calibration Target Temperature 2 Word 11: Calibration Target Temperature 3 Word 12: Calibration Target Temperature 4 Word 13: Calibration Target Temperature 5 Word 14: Calibration Target Temperature 6 Word 15: Calibration Target Temperature 7 Word 16: Sub-reflector Temperature 1 Word 17: Local Oscillator Monitor Current 16 Word 18: Local Oscillator Monitor Current 17 Word 19: Local Oscillator Monitor Current 18/19/20 Word 20: Local Oscillator 16 Temperature Word 21: Local Oscillator 17 Temperature Word 22: Local Oscillator 18/19/20 Temperature Word 23: PRT Bridge Voltage Word 24: PRT Board Temperature (A26) |
2685 | 2732 | i | 2 | 24 | 0 | counts | |
| <Zero Fill> | 2733 | 2744 | i | 4 | 3 | 0 | ||
| ANALOG TELEMETRY | ||||||||
| Invalid Data Bit 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 Status bits 26 - 2: Words 26 through 2 (in order) bit 1: +12V (A) Secondary (Word 1) bit 0: <zero fill> |
2745 | 2748 | u | 4 | 1 | 0 | 1 | |
| Word 1: +12V (A) Secondary Word 2: -12V (A) Secondary Word 3: +15V (A) Secondary Word 4: -15V (A) Secondary Word 5: +8V (A) Secondary Word 6: +5V (D) Secondary Word 7: +5V (A) Secondary Word 8: -5V (A) Secondary Word 9: +5V Reference Secondary Word 10: ICE Temperature Word 11: MDE Temperature Word 12: PEU Temperature Word 13: PSU Temperature Word 14: Scan Motor Temperature Word 15: Scan Motor Current Word 16: Ch 16 LO Temperature Word 17: Ch 17 LO Temperature Word 18: Ch 18/19/20 LO Temperature Word 19: STX-1 Status Word 20: STX-2 Status Word 21: STX-3 Status Word 22: STX-4 Status Word 23: STX-1 Power Word 24: STX-2 Power Word 25: STX-3 Power Word 26: SARR-A Power Word 27: SARR-B Power Word 28: <Zero Fill> |
2749 | 2804 | i | 2 | 28 | 0 | counts | 2 |
| FILLER | ||||||||
| <Zero Fill> | 2805 | 3072 | i | 4 | 67 | 0 | 1 | |
| NOTES (Revision History): 1) 12Nov1998 (NOAA-15 Orbit B0260303): Add transmitter housekeeping data in analog telemetry and invalid data bit flags; add transmitter switchover bit 4 of Quality Indicator Bit Field; adjust trailing zero fill. 2) 04Mar1999 (NOAA-15 Orbit B0419595): Rename analog telemetry SARR-A and B Status to Power; add "new" bias status bit 5 to Quality Indicator Bit Field; add "new" bias status change bit 6 to Quality Indicator Bit Field; rename bit 4 of Quality Indicator Bit Field to transmitter status change. If bits 4 or 6 are 1, then calibration is questionable. If bit 5 is set, then user should apply the new bias corrections (Tables for Scan 1, 2, and 3) to the Earth views. |
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