DQRID : D001205.1
Start DateStart TimeEnd DateEnd Time
05/05/2000195509/18/20002145
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Subject:
SGP/MWR/C1 - Time drift
DataStreams:sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpmwrlosC1.a1
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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