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A Mach-Zehnder interferometer based fiber-optic distributed disturbance sensor (FDDS) incorporating a modified phase generation carrier (PGC) is proposed and investigated. It is found that the slow time-varying fluctuation such as temperature variation causes the location errors. By employing a modified PGC technique that satisfies the requirements including high sampling frequency and compensation of the time delay from the long length fiber, the location errors caused by the slow time-varying fluctuation can be eliminated.

To improve the reliability, real-time performance and maintainability of navigation system, an optical-mechanical-electrical integrative design method of the fiber optic gyro inertial navigation /beidou/odometer integrated navigation system is proposed. Based on the basic working principle of the integrated navigation system, design of system structure and signal connection are implemented. In the integrated navigation system, all-fixed-structure, instrument and system integrative design and modularization design are used. At last, the integrated navigation system is developed, north seeking test and vehicle test are carried out to demonstrate the validity of the referred system design.

Reliability is one of the key issues in widely application of real-time video transmission. The fault-tolerant mechanisms of 1394b optical bus protocol are investigated for 1394b optical bus-based real-time video. In addition, a method of hardware redundancy fault-tolerant is proposed. The hardware topology is built with embedded video function nodes, and fault-tolerant control software is realized on VC platform. Furthermore, the 1394b optical bus-based video transmission is demonstrated by experiment, due to which, performances of fault-tolerant for the transmission is evaluated.