一种测试光纤惯导时间误差方法及系统
By synchronizing the fiber optic inertial navigation time with GNSS satellite timing, the fiber optic inertial navigation time error is calculated, which solves the problem of insufficient accuracy in the test of fiber optic inertial navigation integral time error in the existing technology and realizes high-precision time error measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING AEROSPACE TIMES OPTICAL ELECTRONICS TECH
- Filing Date
- 2023-05-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for testing the integral time error of fiber optic inertial navigation systems rely on the low precision of oscilloscopes, resulting in large measurement errors and making it difficult to meet the requirements for high-precision navigation information calculation.
The GNSS satellite timing method is adopted. The offset between the fiber optic inertial navigation time and the GNSS time is measured to calculate the fiber optic inertial navigation time error. The local time of the fiber optic inertial navigation is synchronized with the GNSS time, and the time difference is calculated within a predetermined time to obtain the fiber optic inertial navigation time error.
This improves the accuracy and reliability of fiber optic inertial navigation time error testing, enabling efficient and accurate time error calculation in a laboratory environment and reducing reliance on oscilloscope accuracy.
Smart Images
Figure CN116817963B_ABST