通过简述多种调制方式中频信号数字产生的基本处理方法，提出了一种具体实施方案，并分析了其技术特点。
This paper discusses the digital generation method for communication IF signals and proposes a concrete implementation resolution and analyzes its technical characteristics.
根据GPS信号的结构和调制特点，加上环境噪声，模拟出GPS中频数字信号。
According to GPS signal structure and modulation characteristics, a GPS intermediate frequency digital signal is simulated under the condition of noise environment.
介绍了通过数字中频技术提取雷达信号脉内特征，并根据脉内特征参数对雷达信号调制形式进行识别。
The in-pulse features of radar signals are extracted by the digital IF technology, and the modulation forms of radar signals are identified according to the in-pulse feature parameters.
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