The study of this method is of great significance to guidance and navigation of vehicles.

该方法的研究对飞行器的导航与制导具有重要意义。

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Star tracker is a sensing system with high accuracy and sensitivity in the guidance and navigation. It offers the direction reference to the aircraft and spacecraft by the use of the celestial stars.

星跟踪器是高精度和高灵敏度的导航和制导用传感设备，它利用天上的恒星为系统提供方向基准。

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This circuitry is also in use in high-performance gyroscopes in guidance control systems and navigation systems.

该电路也是在制导控制系统和导航系统的高性能陀螺仪的使用。

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Independent Russian military analyst Viktor Litovkin says Russia lacks combat support systems rather than firing units, and notes that such systems consist of drones, precision weapons,reconnaissance,navigation, communication,and guidance systems,etc.

VOA: standard.2009.03.20

"I can influence the guidance and navigation of the aircraft, " he told the BBC, adding that the system had "limitations".

BBC: Hacker targets flight deck computer systems

The company hasn't said which handset will be used in the satellite, but they chose Android because it allows engineers to easily modify the phone to do their bidding -- from controlling pulse plasma thrusters to handling the advanced guidance and navigation systems of the foot long satellite.

ENGADGET: SSTL using Android handsets to control satellites, conquer the final frontier

Technologies being tested in the program include advanced guidance, navigation and control, thermal protection systems, avionics, high temperature structures and seals, conformal reusable insulation, lightweight electromechanical flight systems, and autonomous orbital flight, reentry and landing.

ENGADGET: USAF relaunches its first X-37B on a slightly less mysterious spaceflight