Subject: | SGP/MWR/C1 - Time drift |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpmwrlosC1.a1
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Description: | On 9/18/00, I found that the time on the MWR laptop was 1m 21s slow. The Dimension4
utility had last synchronized the time on 5/5/00. Found that the network DNS settings had been
disabled. Added the DNS entry for ntp host CF10. Dimension4 synchronized the clock by
adding 80.91s. The time had drifted at a rate of -0.59s/day. |
Suggestions: | |
Measurements: | sgpmwrlosC1.a1: - 23.8 GHz sky signal(sky23)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- (tknd)
- Total water vapor along LOS path(vap)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Sky Infra-Red Temperature(sky_ir_temp)
- Averaged total liquid water along LOS path(liq)
- 31.4 GHz sky signal(sky31)
- Temperature correction coefficient at 31.4 GHz(tc31)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- base time in epoch(base_time)
- 23.8 GHz Blackbody signal(bb23)
- Blackbody kinetic temperature(tkbb)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Time offset from base_time(time_offset)
- Temperature correction coefficient at 23.8 GHz(tc23)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Mixer kinetic (physical) temperature(tkxc)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- 31.4 GHz blackbody(bb31)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Ambient temperature(tkair)
more
sgpmwrtipC1.a1: - Temperature correction coefficient at 31.4 GHz(tc31)
- 23.8 GHz Blackbody signal(bb23)
- Time offset from base_time(time_offset)
- Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
- Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Mixer kinetic (physical) temperature(tkxc)
- 23.8 GHz sky signal(tipsky23)
- (tknd)
- 31.4 GHz sky brightness temperature derived from tip curve(tbsky31tip)
- 23.8 GHz goodness-of-fit coefficient(r23)
- Actual elevation angle(actel)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Temperature correction coefficient at 23.8 GHz(tc23)
- 31.4 GHz blackbody(bb31)
- Blackbody kinetic temperature(tkbb)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- 31.4 GHz sky signal(tipsky31)
- Correlation coefficients for tip curve at 31.4 GHz(r31)
- Actual Azimuth(actaz)
- Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
- base time in epoch(base_time)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Ambient temperature(tkair)
- 23.8 GHz sky brightness temperature derived from tip curve(tbsky23tip)
- Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
more
sgpmwrlosC1.b1: - 23.8 GHz sky signal(sky23)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Blackbody kinetic temperature(tkbb)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- base time in epoch(base_time)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Time offset from base_time(time_offset)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Mixer kinetic (physical) temperature(tkxc)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Sky Infra-Red Temperature(sky_ir_temp)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Ambient temperature(tkair)
- Total water vapor along LOS path(vap)
- 31.4 GHz blackbody(bb31)
- Averaged total liquid water along LOS path(liq)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- 23.8 GHz Blackbody signal(bb23)
- (tknd)
- 31.4 GHz sky signal(sky31)
more
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