| 1. | Realization of if digital receiver based on software radio architecture
用软件无线电方法实现中频信号的数字化接收解调 |
| 2. | Radar if signal sampling and engineering implementation of digital coherent detection
雷达中频信号采样及数字相干检波的工程实现 |
| 3. | The digital if signal is converted to zero if by digital down converter , then taken fft spectrum analysis with hann window in advance
数字中频信号首先通过数字混频下变频至零中频，然后作加海窗的复fft谱分析。 |
| 4. | In this process , it is costas that transforms medium signal loaded with data information to baseband signal deprived of carrier
其中，将带有数据信息的中频信号变为除去载波的基带信号由科思塔斯环（ costas ）完成。 |
| 5. | This approach realizes channel simulation by combining special dsp chips with universal dsp chip , after the sampling of high - speed if signal
对高速的中频信号采样数字化后,以专用dsp芯片和通用dsp芯片相结合的方法实现信道仿真。 |
| 6. | 3 . accomplished the hardware design of intermediate frequency signal processing 4 . accomplished the software design of intermediate frequency signal processing
3 .完成了中频信号处理的硬件设计。 4 .完成了中频信号处理的软件设计。 |
| 7. | With the purpose of radio surveillance we design the hardware system with the function of if data sampling 、 if data processing 、 high speed data transferring
本文针对通用接收机中频信号输出设计了中频信号采集、中频信号处理和高速数据传输硬件系统,应用于无线电监测系统。 |
| 8. | In the digital intermediate frequency project , the intermediate frequency signal is converted to digital signal directly into the dsp chip , then it is be processed by dft
数字中频方案将中频信号直接通过a / d转换后送入dsp芯片进行dft变换，最后得到待测信号频谱的采样序列。 |
| 9. | Lfmcw radar adopts the receiver with the structure of “ homodyne - fourier ” , and acquires the range spectrum after its if signal is sampled , and then processed by ftt
Lfmcw雷达采用了“差拍-傅立叶”接收机结构,其回波中频信号经数字采集后进行fft处理,从而获得雷达的距离谱。 |
| 10. | The research object of traditional dm method is the output of base - band dsss / bpsk signal delay and multiplication processing or the base - band component of output of if dsss / bpsk signal delay and multiplication processing
传统的延迟相乘法研究对象是基带信号的延迟相乘输出,或中频信号延迟相乘输出的基带部分。 |
