Details
| Original language | English |
|---|---|
| Pages (from-to) | 3773-3779 |
| Number of pages | 7 |
| Journal | Geophysical research letters |
| Volume | 42 |
| Issue number | 10 |
| Early online date | 20 May 2015 |
| Publication status | Published - 28 May 2015 |
Abstract
The determination of high-frequency displacements using Global Navigation Satellite Systems (GNSS) observations with sampling frequencies > 1 Hz has attracted much interest in recent years, e.g., in seismology. We propose a new concept for GPS Precise Point Positioning (PPP) that takes advantage of a highly stable oscillator connected to the GPS receiver by modeling its behavior. We show that the high-frequency noise of kinematic GPS height estimates can be reduced by a factor of up to 4 to the level of 2-3 mm and the overall standard deviation including systematic long periodic errors by a factor of up to 2 to the 1 cm level. Consequently, valuable small and currently hidden vertical displacements can be detected that are not visible with classical PPP. Using data of the 2010 Chile earthquake, we demonstrate that coseismic vertical displacements with an amplitude of only 5 mm can be recovered using PPP with the proposed clock modeling strategy.
Keywords
- atomic clock, GPS, kinematic PPP, monitoring, oscillator modeling, seismology
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- General Earth and Planetary Sciences
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In: Geophysical research letters, Vol. 42, No. 10, 28.05.2015, p. 3773-3779.
Research output: Contribution to journal › Letter › Research › peer review
}
TY - JOUR
T1 - Improved GPS-based coseismic displacement monitoring using high-precision oscillators
AU - Weinbach, U.
AU - Schön, S.
PY - 2015/5/28
Y1 - 2015/5/28
N2 - The determination of high-frequency displacements using Global Navigation Satellite Systems (GNSS) observations with sampling frequencies > 1 Hz has attracted much interest in recent years, e.g., in seismology. We propose a new concept for GPS Precise Point Positioning (PPP) that takes advantage of a highly stable oscillator connected to the GPS receiver by modeling its behavior. We show that the high-frequency noise of kinematic GPS height estimates can be reduced by a factor of up to 4 to the level of 2-3 mm and the overall standard deviation including systematic long periodic errors by a factor of up to 2 to the 1 cm level. Consequently, valuable small and currently hidden vertical displacements can be detected that are not visible with classical PPP. Using data of the 2010 Chile earthquake, we demonstrate that coseismic vertical displacements with an amplitude of only 5 mm can be recovered using PPP with the proposed clock modeling strategy.
AB - The determination of high-frequency displacements using Global Navigation Satellite Systems (GNSS) observations with sampling frequencies > 1 Hz has attracted much interest in recent years, e.g., in seismology. We propose a new concept for GPS Precise Point Positioning (PPP) that takes advantage of a highly stable oscillator connected to the GPS receiver by modeling its behavior. We show that the high-frequency noise of kinematic GPS height estimates can be reduced by a factor of up to 4 to the level of 2-3 mm and the overall standard deviation including systematic long periodic errors by a factor of up to 2 to the 1 cm level. Consequently, valuable small and currently hidden vertical displacements can be detected that are not visible with classical PPP. Using data of the 2010 Chile earthquake, we demonstrate that coseismic vertical displacements with an amplitude of only 5 mm can be recovered using PPP with the proposed clock modeling strategy.
KW - atomic clock
KW - GPS
KW - kinematic PPP
KW - monitoring
KW - oscillator modeling
KW - seismology
UR - http://www.scopus.com/inward/record.url?scp=84931561328&partnerID=8YFLogxK
U2 - 10.1002/2015GL063632
DO - 10.1002/2015GL063632
M3 - Letter
AN - SCOPUS:84931561328
VL - 42
SP - 3773
EP - 3779
JO - Geophysical research letters
JF - Geophysical research letters
SN - 0094-8276
IS - 10
ER -