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Track geometrical parameter measurement method based on INS/GNSS and total station instrument combined use
The invention provides a track geometrical parameter measurement system and method based on INS/GNSS and total station instrument combined use. The system comprises a T-shaped vehicle body assembly, an INS/GNSS inertial sensor assembly/navigation satellite receiving antenna mobile station assembly, a navigation satellite receiving antenna base station assembly, a total station instrument assembly, a reflecting mirror assembly, a track gauge measuring assembly, a high-precision mileage metering assembly and a measurement system control computer assembly. According to the track geometrical parameter measurement system and method provided with the structure and based on INS/GNSS and total station instrument combined use, in a measurement interval, a total station instrument measurement method and an INS/GNSS measurement method are alternately used in all measurement segments. The total station instrument is used at the starting point and the terminal point of each measurement segment, and absolute geometrical parameter measured values of two points of a track are provided; an INS/GNSS is continuously used in each measurement segment, and relative geometrical parameter measured values between two points of each segment are provided; the measured values of the total station instrument and the measured values of the INS/GNSS are seamlessly connected; and the two-point absolute geometrical parameter measured values of the total station instrument serve as an integrity constraint of the INS/GNSS in each segment, and it is guaranteed that the INS/GNSS can meet the measurement precision requirement in the segment.
Track geometrical parameter measurement method based on INS/GNSS and total station instrument combined use
The invention provides a track geometrical parameter measurement system and method based on INS/GNSS and total station instrument combined use. The system comprises a T-shaped vehicle body assembly, an INS/GNSS inertial sensor assembly/navigation satellite receiving antenna mobile station assembly, a navigation satellite receiving antenna base station assembly, a total station instrument assembly, a reflecting mirror assembly, a track gauge measuring assembly, a high-precision mileage metering assembly and a measurement system control computer assembly. According to the track geometrical parameter measurement system and method provided with the structure and based on INS/GNSS and total station instrument combined use, in a measurement interval, a total station instrument measurement method and an INS/GNSS measurement method are alternately used in all measurement segments. The total station instrument is used at the starting point and the terminal point of each measurement segment, and absolute geometrical parameter measured values of two points of a track are provided; an INS/GNSS is continuously used in each measurement segment, and relative geometrical parameter measured values between two points of each segment are provided; the measured values of the total station instrument and the measured values of the INS/GNSS are seamlessly connected; and the two-point absolute geometrical parameter measured values of the total station instrument serve as an integrity constraint of the INS/GNSS in each segment, and it is guaranteed that the INS/GNSS can meet the measurement precision requirement in the segment.
Track geometrical parameter measurement method based on INS/GNSS and total station instrument combined use
CHI JIASHENG (author) / SONG GUANGWEI (author)
2015-12-16
Patent
Electronic Resource
English
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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