介绍了数字式双通道数据检测系统中重叠码校正合成码方法的原理和实现技术，应用概率分布理论导出了重叠码校正合成码的充要条件，并讨论了其应用及软、硬件实现方案．重叠码校正合成码方法具有适应性、通用性、实时性和抗干扰性较好的特点，可用于高精度数字式动态和静态数据检测系统中． The principle and technology of overlay code correction synthesis code in digital two - channel data detection system are introduced. The necessary and sufficient condition of overlay code correction synthesis code is deduced by using probability distribution theory. The application, software and hardware implementation are discussed. Overlap code correction synthesis code method has the characteristics of adaptability, versatility, real-time and good anti-interference, can be used for high-precision digital dynamic and static data detection system.