摘要
主要在理论上分析了零中频接收机架构,并用实验进行了验证。将零中频接收机与超外差接收机进行对比,分析了零中频接收机在多波形接收和软件灵活性上的优势,同时识别了零中频架构中直流偏差、本振泄漏和闪烁噪声等工程上可能存在的问题,并通过实验对比测试验证了两者之间的性能差异。通过对研究结果进行分析论证,提出了后续针对零中频端机所需的优化策略与方向。
The architecture of zero-Intermediate Frequency receiver is compared with that of superheterodyne receiver,and the advantages of zero-IF receiver in multi-waveform reception and software flexibility are analyzed.At the same time,the possible engineering problems such as Digital Channel(DC)deviation,local vibration leakage and flicker noice in zero-IF architecture are identified,and the performance differences are verified through experimental comparative testing.The results of the study emphasize the optimization strategy and direction for the zero-IF terminal machine.
出处
《现代导航》
2025年第2期147-151,156,共6页
Modern Navigation
关键词
零中频
AD9371
超宽带数字信道
Zero-Intermediate Frequency
AD9371
Ultra-Wideband Digital Channel
