本文介绍了一种高精度的数字卫星电视授时系统,分析了数字电视授时的基本原理,讨论了授时系统应具备的功能,给出了数字卫星电视授时系统建设的方案以及各子系统方案。通过试验测试,将授时电文插入电视信号后,信噪比、误码率等均无明显变化,没有影响电视正常播出。 This paper introduces a high-precision digital satellite TV timing system, analyzes the basic principle of digital television timing, discusses the timing system should have the function, gives the digital satellite television timing system construction programs and subsystems programs. Through the test, after the timing of the message into the television signal, the signal to noise ratio, bit error rate, etc. no significant change, did not affect the normal broadcast television.