This code helps to find the peak detection of in receiver system.

检测一个正弦波峰值个数，大于某个固定值时报警。-Detection of a sine wave peak number, greater than a fixed value alarm.

在FPGA中利用DDS的原理实现了扫频功能并使用高速的AD采集数据，同时完成了数字峰值检波，并配合高速DA实现数据的输出-Use DDS principle in the FPGA to achieve the sweep function and use of high-speed data acquisition AD, while the completion of the digital peak detection, and with high-speed data output DA