Details
Original language | English |
---|---|
Title of host publication | 2020 IEEE/ION Position, Location and Navigation Symposium, PLANS 2020 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 208-218 |
Number of pages | 11 |
ISBN (electronic) | 9781728102443 |
Publication status | Published - Apr 2020 |
Event | 2020 IEEE/ION Position, Location and Navigation Symposium, PLANS 2020 - Portland, United States Duration: 20 Apr 2020 → 23 Apr 2020 |
Publication series
Name | IEEE Symposium on Position Location and Navigation (PLANS) |
---|---|
ISSN (electronic) | 2153-3598 |
Abstract
In civil aviation, navigation performance has to be maintained up to a high standard for its uninterrupted operations. Global navigation satellite systems (GNSS) coupled with other navigational aid system provide the required performance levels for flight operations. In GNSS based position estimates, the vertical component is less accurate than the horizontal component; it is specifically due to the necessity of estimating a receiver clock bias. In all phases of flight navigation, the accuracy of height component is extremely important. With the concept of receiver clock modeling (RCM), sometimes also referred as clock coasting, the accuracy of the vertical component can be improved by a large extent. In this paper, we present experimental results of GNSS code-based flight navigation with and without RCM. GNSS observations are captured during a flight for about three hours with multiple geodetic grade GNSS receivers and an inertial measurement unit (IMU). Some of the receivers are connected with external atomic clocks to analyze the feasibility and validity of RCM in flight navigation; also to study the impact of flight dynamics on the external clocks and GNSS observations. Data captured are processed post-flight; position and clock errors are estimated with multi-GNSS code and Doppler observations using a Kalman filter (KF) approach. The estimated position and clock errors are computed twice, once by applying the concept of RCM and once without applying it. Finally, the estimated positions are compared with the reference trajectory and the topocentric coordinate differences are evaluated. Experimental results demonstrate that the precision in the height component is improved by about 65% using GPS and Galileo P-code observations with RCM applied compared to a positioning solution without applying RCM. Overall, there is no significant difference in the horizontal components for the solution computed with and without RCM. The effects of flight dynamics on external atomic clocks and GNSS observations are also discussed briefly. There exists a high correlation (about 90%) between flight acceleration and the frequency offset of an external atomic ovenized quartz oscillator during a highly dynamic maneuver phase.
Keywords
- chip scale atomic clocks, clock coasting, flight dynamics, GNSS, Kalman filter (KF), receiver clock modeling (RCM)
ASJC Scopus subject areas
- Computer Science(all)
- Signal Processing
- Engineering(all)
- Aerospace Engineering
- Mathematics(all)
- Control and Optimization
- Physics and Astronomy(all)
- Instrumentation
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
2020 IEEE/ION Position, Location and Navigation Symposium, PLANS 2020. Institute of Electrical and Electronics Engineers Inc., 2020. p. 208-218 9109925 ( IEEE Symposium on Position Location and Navigation (PLANS) ).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Influence of Receiver Clock Modeling in GNSS-based Flight Navigation
T2 - 2020 IEEE/ION Position, Location and Navigation Symposium, PLANS 2020
AU - Jain, Ankit
AU - Schön, Steffen
N1 - Funding Information: ACKNOWLEDGMENT The authors would like to thank Dr. Jens Kremer and Andreas Dach from IGI mbH for conducting the flight experiment with us and providing the reference trajectory solution. The authors also thank Dr. Thomas Krawinkel from our group for his time and valuable insights with regards to the planning and analyzing of the flight experiment. This work has received funding from the Federal Ministry of Economics and Technology of Germany, following a resolution of the German Bundestag (project number: 50NA1321).
PY - 2020/4
Y1 - 2020/4
N2 - In civil aviation, navigation performance has to be maintained up to a high standard for its uninterrupted operations. Global navigation satellite systems (GNSS) coupled with other navigational aid system provide the required performance levels for flight operations. In GNSS based position estimates, the vertical component is less accurate than the horizontal component; it is specifically due to the necessity of estimating a receiver clock bias. In all phases of flight navigation, the accuracy of height component is extremely important. With the concept of receiver clock modeling (RCM), sometimes also referred as clock coasting, the accuracy of the vertical component can be improved by a large extent. In this paper, we present experimental results of GNSS code-based flight navigation with and without RCM. GNSS observations are captured during a flight for about three hours with multiple geodetic grade GNSS receivers and an inertial measurement unit (IMU). Some of the receivers are connected with external atomic clocks to analyze the feasibility and validity of RCM in flight navigation; also to study the impact of flight dynamics on the external clocks and GNSS observations. Data captured are processed post-flight; position and clock errors are estimated with multi-GNSS code and Doppler observations using a Kalman filter (KF) approach. The estimated position and clock errors are computed twice, once by applying the concept of RCM and once without applying it. Finally, the estimated positions are compared with the reference trajectory and the topocentric coordinate differences are evaluated. Experimental results demonstrate that the precision in the height component is improved by about 65% using GPS and Galileo P-code observations with RCM applied compared to a positioning solution without applying RCM. Overall, there is no significant difference in the horizontal components for the solution computed with and without RCM. The effects of flight dynamics on external atomic clocks and GNSS observations are also discussed briefly. There exists a high correlation (about 90%) between flight acceleration and the frequency offset of an external atomic ovenized quartz oscillator during a highly dynamic maneuver phase.
AB - In civil aviation, navigation performance has to be maintained up to a high standard for its uninterrupted operations. Global navigation satellite systems (GNSS) coupled with other navigational aid system provide the required performance levels for flight operations. In GNSS based position estimates, the vertical component is less accurate than the horizontal component; it is specifically due to the necessity of estimating a receiver clock bias. In all phases of flight navigation, the accuracy of height component is extremely important. With the concept of receiver clock modeling (RCM), sometimes also referred as clock coasting, the accuracy of the vertical component can be improved by a large extent. In this paper, we present experimental results of GNSS code-based flight navigation with and without RCM. GNSS observations are captured during a flight for about three hours with multiple geodetic grade GNSS receivers and an inertial measurement unit (IMU). Some of the receivers are connected with external atomic clocks to analyze the feasibility and validity of RCM in flight navigation; also to study the impact of flight dynamics on the external clocks and GNSS observations. Data captured are processed post-flight; position and clock errors are estimated with multi-GNSS code and Doppler observations using a Kalman filter (KF) approach. The estimated position and clock errors are computed twice, once by applying the concept of RCM and once without applying it. Finally, the estimated positions are compared with the reference trajectory and the topocentric coordinate differences are evaluated. Experimental results demonstrate that the precision in the height component is improved by about 65% using GPS and Galileo P-code observations with RCM applied compared to a positioning solution without applying RCM. Overall, there is no significant difference in the horizontal components for the solution computed with and without RCM. The effects of flight dynamics on external atomic clocks and GNSS observations are also discussed briefly. There exists a high correlation (about 90%) between flight acceleration and the frequency offset of an external atomic ovenized quartz oscillator during a highly dynamic maneuver phase.
KW - chip scale atomic clocks
KW - clock coasting
KW - flight dynamics
KW - GNSS
KW - Kalman filter (KF)
KW - receiver clock modeling (RCM)
UR - http://www.scopus.com/inward/record.url?scp=85087056298&partnerID=8YFLogxK
U2 - 10.1109/PLANS46316.2020.9109925
DO - 10.1109/PLANS46316.2020.9109925
M3 - Conference contribution
AN - SCOPUS:85087056298
T3 - IEEE Symposium on Position Location and Navigation (PLANS)
SP - 208
EP - 218
BT - 2020 IEEE/ION Position, Location and Navigation Symposium, PLANS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 20 April 2020 through 23 April 2020
ER -