2. Attributes

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Source: sbf2ismr v22.1.0

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Signal groups

1. Sig1:

   • L1CA for GPS/GLONASS/SBAS/QZSS
   • L1BC for GALILEO
   • B1 for BeiDou

2. Sig2:

   • L2C for GPS/GLONASS/QZSS
   • L5 for SBAS
   • E5a for*GALILEO
   • B2 for BeiDou

3. Sig3:

   • L5 for GPS/QZSS
   • E5b for GALILEO

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GPS Week Number

available as:

wn

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GPS Time of Week (seconds)

available as:

tow

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Satellite identification

available as:

svid

1-37: PRN number for GPS satellites

38-61: Slot number for GLONASS satellites (with an offset of 37)

71-106: PRN number for GALILEO satellites (with an offset of 70)

120-138: PRN number for SBAS satellites

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Value of the RxState field of the ReceiverStatus SBF block

avliable as:

sbf_block

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Azimuth (degrees)

It indicates the direction of the projection of the line-of-sight onto the local horizontal plane measured from the geographic North positive to the East.

avaliable as:

azim

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Elevation (degrees)

It defines the angle between the local horizontal plane and the direction to the satellite.

avaliable as:

elev

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Average signal C/N0 over the last minute (dB-Hz)

Carrier-to-Noise Ratio

avaliable at:

Sig1Sig2Sig3

as

avg_cn0_l1

as

avg_cn0_l2

as

avg_cn0_l5

Averaged C/N0 of the second frequency used for the TEC computation

avaliable as:

f2nd_tec_cn0

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Total S4 on signal (dimentionless)

avaliable at:

Sig1Sig2Sig3

as

s4

as

s4_l2

as

s4_l5

Correction to total S4

avaliable at:

Sig1Sig2Sig3

as

s4_correction

as

s4_correction_l2

as

s4_correction_l5

S4 corrected

$${\displaystyle \begin{array}{c}\surd (s{4}^2-s4\mathrm{\_}correctio{n}^2)\end{array}}$$

avaliable at:

Sig1Sig2Sig3

as

s4_corrected

as

s4_l2_corrected

as

s4_l5_corrected

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Phi on signal

Phi01

• 1 second phase sigma (radians)

avaliable at:

Sig1Sig2Sig3

as

phi01|1

as

phi01_l2

as

phi01_l5

Phi03

• 3 second phase sigma (radians)

avaliable at:

Sig1Sig2Sig3

as

phi03|1

as

phi03_l2

as

phi03_l5

Phi10

• 10 second phase sigma (radians)

avaliable at:

Sig1Sig2Sig3

as

phi10|1

as

phi10_l2

as

phi10_l5

Phi30

• 30 second phase sigma (radians)

avaliable at:

Sig1Sig2Sig3

as

phi30|1

as

phi30_l2

as

phi30_l5

Phi60

• 60 second phase sigma (radians)

avaliable at:

Sig1Sig2Sig3

as

phi60|1

as

phi60_l2

as

phi60_l5

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Code/Carrier divergence (meters)

Average

avaliable at:

Sig1Sig2Sig3

as

avgccd_l1

as

avgccd_l2

as

avgccd_l5

---

Standard deviation

avaliable at:

Sig1Sig2Sig3

as

sigmaccd_l1

as

sigmaccd_l2

as

sigmaccd_l5

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Total electron content

Tec unit

avaliable at:

TOWTOW - 45 secondsTOW - 30 secondsTOW - 15 seconds

as

tec

as

tec_45

as

tec_30

as

tec_15

Difference of total electron content

avaliable from:

TOW - 60s to 45sTOW - 45s to 30sTOW - 30s to 15s15s to TOW

as

dtec_6045

as

dtec_4530

as

dtec_3015

as

dtec_15tow

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Lock time

Indicates for how long each satellite’s signal has been continuously tracked on an antenna and is expressed in seconds.

avaliable at:

Sig1Sig2Sig3

as

locktime_l1

as

locktime_l2

as

locktime_l5

On the second frequency used for the TEC computation

as

f2nd_tec_locktime

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SI Index

$${\displaystyle \begin{array}{c}\frac{(10\ast log10(Pmax)-10\ast log10(Pmin))}{(10\ast log10(Pmax)+10\ast log10(Pmin))}\end{array}}$$

avaliable at:

Sig1Sig2Sig3

as

si_l1

as

si_l2

as

si_l5

$${\displaystyle \begin{array}{c}\frac{(10\ast log10(Pmax)-10\ast log10(Pmin))}{}\end{array}}$$

numerator only (dB)

avaliable at:

Sig1Sig2Sig3

as

numerator_si_l1

as

numerator_si_l2

as

numerator_si_l5

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Phase spectral Slope

0.1 to 25Hz range (dimensionless)

avaliable at:

Sig1Sig2Sig3

as

p_l1

as

p_l2

as

p_l5

---

Phase power spectral density

1 Hz (rad^2/Hz)

avaliable at:

Sig1Sig2Sig3

as

t_l1

as

t_l2

as

t_l5

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Coordinated Universal Time

LISN receivers use the UTC time system, so there is a difference of a few seconds between records due to the time difference between the GPS and UTC time system.

LISN receivers data are avaliable as

time_utc_1
time_utc_2
time_utc_3
time_utc_4
time_utc_5
time_utc_p1
time_utc_p2
time_utc_p3
time_utc_p4
time_utc_p5