从多种信号中检测识别线性调频信号、相位编码信号、频率编码信号。
Liner frequency modulating signal, phase coded and frequency coded signal are detected and recognized from all kinds of signals.
本文讨论了步进频率编码信号的模糊函数，提出了一种正负步进频率编码信号及其处理方法。
The ambiguity function of step frequency coded signal is discussed. An up-down step frequency coded signal waveform is designed with its processing method.
因此，若将重复周期参差调制方式融合到频率编码信号中，可使信号具备时-频调制双重随机性。
So, the modulation of irregular pulse repetition interval may be employed in FCP that the randomization of signal modulation would be obtained in both time and frequency domains.
这种挑战使得人们努力开发高效的编码、调制以及信号处理技术来提高无线频率的效率。
It spurs us to develop highly efficient coding, modulation and signal processing techniques to improve the wireless frequency spectrum efficiency.
在传统的压缩编码技术中，采样均遵循奈奎斯特定律，该定律规定采样速率要高于原信号频率的两倍。
The Nyquist law is applied to all the conventional compression coding algorithms, which prescribes that the sampling rate must be at least as twice as the signal frequency.
雷达系统中，相位编码信号对多普勒频率非常敏感。
In the system of radar, Doppler frequency is very sensitive to the coding signal.
“通过使用多个频率来编码脸的两个不同部位-这个过程被称为多路复用-大脑可以在同一时间代码多个信号，”他说。
"By using multiple frequencies to encode two different parts of the face - a process called multiplexing - the brain can code more signals at the same time," he said.
开发高效的编码、调制以及信号处理技术成为提高无线频率效率的必然手段和当务之急。
To develop highly efficient coding, modulation and signal processing technologies is becoming the most necessary measure to realize these demands.
结果，生成编码后的数据流序列，其相对于编码之前数据流的信号跃迁频率具有更低的位跃迁数目。
As a result, a sequence of encoded data stream having a lower number of bit transitions with respect to the frequency of signal transitions of the data stream prior to the encoding is generated.
现代雷达为获得较高的距离分辨力通常采用编码频率脉冲串信号和步进频率脉冲串信号，但都存在数据率低和较为严重的距离-多普勒耦合问题。
But these signal problems of range-Doppler coupling and low data ratio are still not solved completely although some encouraging results have been obtained and applied in the radar system design.
利用相位编码信号探测高速运动目标时，存在多普勒频率敏感性问题，需要对多普勒频率进行补偿。
When detecting the high-speed moving target by using phase-coded signals, Doppler frequency compensation is necessary because of the Doppler frequency sensitivity of phase-coded signals.
同时，结合相位编码步进频率信号形式提出在高速目标情况下实现精确速度测量的两步估计方法。
Simultaneously, the method implementing precise velocity estimation in two steps associative with PCSF signal characteristic under high moving targets is presented.
与步进频率信号在高速目标下成像失真相比，相位编码步进频率信号的多普勒性能有很明显改善。
Compared with the range profile distortion produced by SF signal in the presence of high moving targets, PCSF signal Doppler performance is obviously improved.
在接收端，通过频率滤波实现对编码信号的提取，由编码信号的信号处理实现激光雷达水下目标探测。
At the receiver, the modulated optical carrier can be examined from a frequency filter to render target detection.
在接收端，通过频率滤波实现对编码信号的提取，由编码信号的信号处理实现激光雷达水下目标探测。
At the receiver, the modulated optical carrier can be examined from a frequency filter to render target detection.
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