Some NCDC systems will be down for hardware maintenance
on Saturday November 22, 2008.
Some NCDC systems will be down for hardware maintenance
on Saturday November 22, 2008.
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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