.png){kind=icon}
.png){kind=icon}
Return
Carrier-Phase-Based Initial Heading Alignment for Land Vehicular MEMS GNSS/INS Navigation System
.png){kind=icon}
PRE
AI
T
S
Q
X
X
DOI：10.1109/TIM.2022.3208646.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
For a micro-electromechanical system (MEMS)-based inertial navigation system (INS) and global navigation satellite system (GNSS) integrated system in land vehicular applications, rapid and accurate initial heading alignment is still a challenge. We propose an initial heading alignment method for MEMS INS using the GNSS carrier-phase measurement, based on the basic principle of trajectory similarity. The proposed method performs trajectory matching in the line-of-sight direction of satellites, where the angle is obtained by comparing the actual observed time-differenced carrier phase (TDCP) and INS-derived TDCP. Experimental results show that the initial heading could be determined accurate to 0.65 degrees and 1.68 degrees at a 95% confidence level within 5 s under open-sky conditions and in typical urban environments, respectively, using a typical MEMS inertial measurement unit (e.g., STIM300, Safran Sensing Technologies Norway) and high-quality GNSS receiver (NovAtel OEM6). The proposed method is also verified using a low-cost GNSS receiver and low-cost inertial measurement unit (IMU) chip under different environments. The proposed method performs better than existing approaches in terms of time efficiency and accuracy.
Keywords:
Trajectory
Global navigation satellite system
Satellites
Receivers
Micromechanical devices
Phase measurement
Inertial navigation
Carrier phase
global navigation satellite system (GNSS)
inertial navigation system (INS) integration
initial alignment
micro-electromechanical system (MEMS) inertial measurement unit (IMU)
time-differenced carrier phase (TDCP)
Journal
IF:
5.9
Papers:
1.9W
Citations:
5.8W
Organization
Cited Papers