The structure of circuit for carrier recovery is perfected in engineering,and the problem of error-lock for frequency-shift carrier is eliminated.
介绍了平方变换法相干解调原理,从工程角度完善了载波提取的电路结构,消除了频移载波的误锁问题。
Simulation of PSK Carrier-Frequency Extraction Based on Improved Wavelet-ridge Method;
基于改进小波脊线的PSK信号载频提取技术仿真
Effect of microwave-assisted extraction on flavone constituents of Pollen Tyhae micropowder;
微波提取对蒲黄超微粉中黄酮类成分影响的研究
Conclusion Solidroside with high purity can be obtained by combining microwave-assisted extraction .
方法以红景天苷的收得率为评价指标,结合大孔吸附树脂分离、精制,比较溶剂提取和微波提取的效率。
Results The optimum microwave-assisted extraction(MAE) condition was dosage liquor(1:40) and extracting with 75% alcohol-0.
结果采用微波提取功率为中火(385W)、体积比(1:1)的75%乙醇和0。
Stady on microwave extraction and stability of pigment in Sappan;
苏木色素的微波提取及稳定性研究
he effect of microwave extraction on the extraction race of arecoline from Areca;
微波提取法对槟榔中槟榔碱的提取率的影响
Study on extracting active ginsenoside from panax ginseng by microwave extraction;
微波提取人参中活性成分人参皂苷的研究
The surfactant assisted extraction(SAE) was integrated with microwave assisted extraction(MAE) to extract a kind of pigment from Polygonum Cusdidotum Steb.
研究结果表明:利用表面活性剂协同微波提取技术,通过优化工艺条件,可以大幅缩短提取时间和提高提取率,该法的优化条件为:原料为2 g虎杖干粉,提取剂为0。
The optimal conditions for microwave assisted extraction are as follows:solid-to-liquid 1:5 (g:mL);five times interval radiation with 50 seconds pe.
比较常规回流提取与微波提取法对石榴籽油的提取率,并采用正交实验法优选微波提取最佳工艺条件。
Research on the use of the microwave assisted extraction for the extraction of pectin from passion skin;
探讨了液料比、微波功率、微波提取时间、提取液pH值对果胶产率的影响。
Carrier-frequency Capture Base on Bispectrum Estimation under Extremely Low SNR and Large Doppler Frequency Shifting
极低信噪比大多普勒频移条件下基于双谱实现载频提取
Research on Carrier Synchronization Algorithm and Observations Extraction Technique in SS Navigation Receiver
中短波扩频导航接收机载波同步与观测量提取研究
A New Apprach to Improve the Accuracy in Real-time Extraction of Basic Pitch
一种提高基频实时提取精度的新方法
Study on the Segmentation of Video Object Plane and Extraction of Video Object;
视频对象平面分割和视频对象提取方法的研究
Detection and Characteristic Parameters Estimation of Frequency-Hopping Signal Using Time-Frequency Analysis;
基于时频分析的跳频信号检测与特征提取
Method Study of Adaptive Time-frequency Analysis and Time-frequency Attributes Extraction;
自适应时频分析及其时频属性提取方法研究
Feature extraction for passive sonar target based on critical band spectrum energy
被动声纳目标临界频带频谱能量的特征提取
Extracting Key Frames from Video Based on Text and Image Information
基于文字和图像信息提取视频关键帧
Study of Extracting Multi-frequency Information of Magnetic Abnormity and Its Application;
磁异常多频段信息的提取及应用研究
The Methods of Vehicle Information Video Extracting and Their Application;
车辆信息的视频提取方法及应用研究
Video Vehicle Tracking and Traffic Information Extraction;
基于视频的车辆跟踪与交通信息提取
Research of Video Object Extraction and Tracking Approach;
视频运动对象提取和跟踪方法的研究
DSP-based Video Image Feature Extraction;
基于DSP的视频图像特征提取技术
Research on Motion Feature Extraction Method in Digital Video;
数字视频中的运动特征提取方法研究
Research on Algorithm of Embedding and Extracting Multi-watermarking from Digital Audio Signal;
数字音频多水印嵌入与提取方法研究
Feature extraction of ultrasonic echo signals(RF);
超声回波射频(RF)信号的特征值提取
Research on Object Extraction and Tracking Based on MPEG-4 Video Objects
基于MPEG-4视频对象提取和跟踪研究
Signal Feature Extraction Base on Factral dimensions of Time-Frequency Domain
基于时频域分形维数的信号特征提取