Title:
UNDERWATER NAVIGATION AND GRAVITY MEASUREMENT INTEGRATED SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/253487
Kind Code:
A1
Abstract:
An underwater navigation and gravity measurement integrated system, comprising three laser gyroscopes (8), three pendulum-type flexible accelerometers (9), three gravity sensors (2), a transposition and angle measurement apparatus (4), a temperature sensor (7), a temperature control box (5), a Doppler log, a depth gauge, two computers, a data collection and processing platform, an LCD display, and circuit boards (3, 6). The three gyroscopes (8) and the three accelerometers (9) are arranged on the transposition mechanism (4) to constitute a laser gyroscope single-axis rotation inertial measurement unit; the gravity sensors (2) are placed in the temperature control box (5) and are rigidly and fixedly connected to the laser gyroscope single-axis rotation inertial measurement unit. The data collection and processing platform processes and records signals of each sensor in real-time. The two computers respectively calculate navigation parameters and local gravity values of the underwater navigation and gravity measurement integrated system. The underwater navigation and gravity measurement integrated system can meet the needs for long-endurance, high-precision, and low-cost navigation and gravity measurement of underwater carriers.
Inventors:
CAI TIJING (CN)
Application Number:
PCT/CN2020/099246
Publication Date:
December 23, 2021
Filing Date:
June 30, 2020
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
G01V7/00; G01C21/00
Domestic Patent References:
| WO2018043006A1 | 2018-03-08 |
Foreign References:
| CN109001829A | 2018-12-14 | |||
| CN106405670A | 2017-02-15 | |||
| CN101769742A | 2010-07-07 | |||
| EP3321631A1 | 2018-05-16 |
Other References:
KE WEI QIAO, QIAO HAI-YAN,MENG FAN-QIANG: "Analysis of the single-axial rotation system for the marine ring laser gyro INS", SHIP SCIENCE AND TECHNOLOGY, vol. 34, no. 12, 31 December 2012 (2012-12-31), pages 67 - 71, XP055882118, ISSN: 1672-7649, DOI: 10.3404/j.issn.1672-7649.2012.12.014
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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