irig

IRIG - B ( DC ) Clock Code Generator in GPS Timing

用GPS校时的IRIG-B（DC）时间码产生器设计

This paper describes the digital demodulating technique for IRIG B code ( AC code ) .

论述了一种IRIG－B格式时间码（交流（AC）码）的数字解调技术。

Digital Demodulating Techniques for IRIG B Code

IRIG-B码数字解调技术

This thesis presents a kind of frequency modulation signal generator that meets the FM-FM IRIG standard .

介绍一种满足IRIG标准的FM-FM调频信号源。

The time code standards for synchronization issued by IRIG are introduced , in which the IRIG-B code is the most popular .

介绍了由美国IRIG组织发布的用于各系统时间同步的时间码标准，其中应用最广泛的是IRIG-B版本，简称B码。

Because the demultiplex filters that meet the IRIG specifications are usually narrowband filters , so it requires a higher order and there is a big difficulty to implement .

但是，符合IRIG标准的分路滤波器通常是窄带滤波器，需要很高的阶数，这给系统的实现带来了很大的困难。

This paper discusses client of time system on test and control system , and discusses about digital demodulation technology on IRIG time code and alternating code , and some methods are discussed to improve the ability of IRIG-B demodulator .

针对测控系统中的时统终端，论述了1种IRIG-B格式时间码交流码（AC）的数字解调技术，提出了用新方法来增强IRIG-B码解调的适应能力。

The IRIG - B decoding device can receive IRIG-B code synchronous clock signals and Pulse Per Second ( PPS ) . The CPLD hardware data acquisition controller ensures the sample time accuracy in the system .

设计了IRIG-B解码器，可以接收IRIG-B同步时钟信号和PPS脉冲信号，并且设计了CPLD硬件数据采集控制控制器保证采样的时间精度；

This system can be used in the international and general time format code IRIG - B code ( called B code for short ) demodulation , and can be used as benchmark of the other systems with time and sampling , synchronous signal .

该系统可用于对国际通用时间格式码IRIG-B码（简称B码）的解调，以及产生各种采样、同步频率信号，也可作为其它系统的时基和采样、同步信号的基准。

The IRIG B code generator , a time synchronization device , is integrated with CPLD technique . The experiments show that the IRIG B code generator with CPLD is more concise , simpler and more convenient for debugging than the original hardware electric circuit .

利用CPLD对时统设备IRIGB码产生器进行集成，其实验结果表明，集成了的B码产生器不但简单、可靠，而且便于调试，克服了以往硬件电路复杂的缺点。