Details
| Original language | English |
|---|---|
| Pages (from-to) | 799-814 |
| Number of pages | 16 |
| Journal | Navigation, Journal of the Institute of Navigation |
| Volume | 68 |
| Issue number | 4 |
| Publication status | Published - 1 Dec 2021 |
Abstract
Receiver clock modeling (RCM) based on code observations requires a chip-scale atomic clock to improve the PVT solution. When using carrier phase observations, a more stable oscillator like a passive hydrogen maser (PHM) is necessary. We applied a PHM in an automotive experiment of about 80 minutes in an urban environment recording 10 Hz multi-GNSS data. Modeling the clock process noise in a linearized Kalman filter according to the spectral behavior of the PHM (i.e., RCM), improves position and velocity regarding precision and accuracy by 15% and 57%, respectively, as well as reliability by 30%. In situations with sparse, geometrically unfavorable observations, RCM prevents large position drifts. The convergence time of the carrier phase ambiguities is not affected. Conclusively, precision, accuracy, and reliability in kinematic precise point positioning can be improved by using an oscillator like a PHM. Future advancements in clock technology should make this approach more feasible for ordinary use cases.
ASJC Scopus subject areas
- Engineering(all)
- Aerospace Engineering
- Engineering(all)
- Electrical and Electronic Engineering
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In: Navigation, Journal of the Institute of Navigation, Vol. 68, No. 4, 01.12.2021, p. 799-814.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Improved high-precision GNSS navigation with a passive hydrogen maser
AU - Krawinkel, Thomas
AU - Schön, Steffen
N1 - Funding Information: Federal Ministry for Economic Affairs and Energy of Germany, Grant/Award Number: 50NA1705.
PY - 2021/12/1
Y1 - 2021/12/1
N2 - Receiver clock modeling (RCM) based on code observations requires a chip-scale atomic clock to improve the PVT solution. When using carrier phase observations, a more stable oscillator like a passive hydrogen maser (PHM) is necessary. We applied a PHM in an automotive experiment of about 80 minutes in an urban environment recording 10 Hz multi-GNSS data. Modeling the clock process noise in a linearized Kalman filter according to the spectral behavior of the PHM (i.e., RCM), improves position and velocity regarding precision and accuracy by 15% and 57%, respectively, as well as reliability by 30%. In situations with sparse, geometrically unfavorable observations, RCM prevents large position drifts. The convergence time of the carrier phase ambiguities is not affected. Conclusively, precision, accuracy, and reliability in kinematic precise point positioning can be improved by using an oscillator like a PHM. Future advancements in clock technology should make this approach more feasible for ordinary use cases.
AB - Receiver clock modeling (RCM) based on code observations requires a chip-scale atomic clock to improve the PVT solution. When using carrier phase observations, a more stable oscillator like a passive hydrogen maser (PHM) is necessary. We applied a PHM in an automotive experiment of about 80 minutes in an urban environment recording 10 Hz multi-GNSS data. Modeling the clock process noise in a linearized Kalman filter according to the spectral behavior of the PHM (i.e., RCM), improves position and velocity regarding precision and accuracy by 15% and 57%, respectively, as well as reliability by 30%. In situations with sparse, geometrically unfavorable observations, RCM prevents large position drifts. The convergence time of the carrier phase ambiguities is not affected. Conclusively, precision, accuracy, and reliability in kinematic precise point positioning can be improved by using an oscillator like a PHM. Future advancements in clock technology should make this approach more feasible for ordinary use cases.
UR - http://www.scopus.com/inward/record.url?scp=85120473642&partnerID=8YFLogxK
U2 - 10.1002/navi.444
DO - 10.1002/navi.444
M3 - Article
AN - SCOPUS:85120473642
VL - 68
SP - 799
EP - 814
JO - Navigation, Journal of the Institute of Navigation
JF - Navigation, Journal of the Institute of Navigation
SN - 0028-1522
IS - 4
ER -