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Method and system for use of GPS disciplined oscillators for coherent timing reference in distributed radar systems
Method and system for use of GPS disciplined oscillators for coherent timing reference in distributed radar systems
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机译:在分布式雷达系统中使用GPS约束振荡器作为相干定时参考的方法和系统
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摘要
An active electronically scanned array radar system and method uses a coherent, stable timing reference to transmit phase synchronized radar signals from a plurality of receiver/exciter elements. A global positioning system (GPS) carrier phase disciplined oscillator receives the GPS carrier signal at a GPS receiver. The GPS carrier contains phase and timing information to phase synchronize the local clock with the GPS carrier to produce a reference clock signal. The reference clock signal is used to synchronize a frequency synthesizer oscillator clock and generate a stable timing reference signal at a frequency significantly greater than the reference clock frequency. The stable timing reference is used to transmit radar signals in a receiver/exciter pair, the radar signals phase synchronized with the GPS carrier signal. Each receiver/exciter element generates its own stable timing reference based on a common GPS carrier. The radar signals from the plurality of receiver/exciter elements use a common clock without need of a physical distribution mechanism.
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