This paper discussed the principles of digital if and the realization on FPGA, and the test results were given to verify the performance of the system.
本文详细讨论了数字中频的原理以及在FPGA上的实现，最后给出了测试结果，验证了系统的性能。
Realize the core parts of digital IF system in FPGA.
在FPGA 中实现了数字中频系统的各个关键模块。
This paper proposes a novel digital IF processing method of BPSK signal.
介绍了一种适用于二相相移键控(BPSK)扩频调制信号的数字式处理方法。
The focus of this paper is how to implement the digital IF in wireless receiver efficiently.
本文的焦点正是如何高效的实现无线通信接收系统中的数字中频部分。
Based on the idea of Software Radio, a complete solution of broadband digital IF is presented.
基于软件无线电的思想，文中提出了完整的宽带数字中频解决方案。
The implement method of ultrashort wave Software radio digital IF receiving module is discussed in this thesis.
本文讨论了超短波软件无线电数字中频接收模块的实现方法。
The design and application of a universal digital IF software radio receiving system is introduced in this paper.
提出了一种通用的数字中频软件无线电接收系统的设计及应用方案。
This subject has completed the research and development of a digital IF receiver based on PCI bus, associating with the proj.
本课题结合项目要求，设计实现了一种基于PCI总线结构的数字中频接收机。
Based on software defined radio theory, the digital IF acquisition system has the features of hardware-defined and system re-configured.
建构于软件无线电理论的数字化中频接收系统，具备硬件可定义、功能可重配置的特点。
In this paper, the conception of SWR is introduced, and the structure of digital IF receiver system is discussed including its core technology.
本文介绍了软件无线电的概念，探讨了数字中频接收机系统结构及其采用的关键技术。
The digital IF receiving and the high-speed digital signal processing technologies are adopted to achieve the high resolution and the high-speed 2-d imaging.
该系统采用数据中频接收和高速数字信号处理技术来实现高分辨率、高速二维成像。
Software Radio has become the focus of research in Communications. Digital IF, one of its key technologies, is typical application of multi-rate signal processing theory.
软件无线电是目前通信领域研究的热点，其关键技术之一数字中频技术是多速率信号处理理论的典型应用。
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.
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。
This paper discusses the key technologies of digital IF processing, the principle and the function of each processing cell are presented and the realization of them is also given in the paper.
讨论了中频数字化处理的关键技术，介绍了各个处理单元的原理及功能并给出了它们的实现方法。
In digital IF receiver based on IF sampling technology, one important issue of system design is how to realize wide instantaneous dynamic range, when the available digits of AD converter is limited.
在基于中频采样技术的数字中频接收机中，怎样在AD变换器位数受限的情况下实现较大的系统瞬时动态范围是系统设计中的一个重要问题。
In digital IF receiver based on IF sampling technology, one important issue of system design is how to realize wide instantaneous dynamic range, when the available digits of AD converter is limited.
在基于中频采样技术的数字中频接收机中，怎样在AD变换器位数受限的情况下实现较大的系统瞬时动态范围是系统设计中的一个重要问题。
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