工频牵引电流会对移频信号带来极大的干扰。
Industrial frequency traction current may interference FSK signal.
相位连续的移频信号有较窄的带宽，抗干扰性能强。
The signal with continuous phase has narrower bandwidth and higher interference-free capability.
分析了相位连续与不连续移频信号的频谱并比较了它们的带宽。
In this paper, the frequency spectrum and the bandwidth of the frequency shift signal with continuous and discontinuous phase are analyzed.
测试结果表明本系统能够准确、实时的对移频信号进行处理，满足了设计需求。
The result of the test has shown that the system could analyze the FSK signal in real time, and it has met the demand of design.
利用锁相环(LL)窄带跟踪特性，与单片机结合，实现自动闭塞系统移频信号解调。
Signal demodulation of automatic block with audio frequency shift modulated track circuits was implemented with phase-locked loop (PLL) technique and a singe chip microcomputer.
随着我国铁路的提速，基于传统检测方法建立的移频信号检测系统面临着极大的考验。
With the accelerating of the speed, frequency-shift signal detection system established based on traditional detection method is facing great challenges in China.
测试结果表明本系统能有效地提高铁路移频信号检测的准确度，具有高集成度和高可靠性。
Test results demonstrate that this system can increase the accuracy of railway frequency-shift signal detection effectively, and has high integration level and reliability.
移频信号监测系统是一个工控检测系统，它的研究和开发实现了对铁路移频信号的实时监测。
The monitor system of shifting frequency signals is an engineering control and test system. By research and development, real-time monitor to railroad shifting frequency signals is realized.
在复合系统通信中，飞行器的高动态使扩频信号存在多普勒频移。
In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
在复合系统通信中，飞行器的高动态使扩频信号存在多普勒频移。
In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
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