差分检测的英文

• differential detection

• "差分"英文翻译    difference
• "检测"英文翻译    check; detection; test; gaug ...
• "双束差分检测器" 英文翻译 :    detector of dual-beam difference
• "差分检波" 英文翻译 :    difference detection; differential detection
• "差分检波器" 英文翻译 :    difference detector; differential detector
• "差分检流计" 英文翻译 :    differential galvanometer
• "积分检测器" 英文翻译 :    integral detector
• "积分检测蛳" 英文翻译 :    integral detector
• "水分检测" 英文翻译 :    md = moisture detection; moisture detection
• "微分检测器" 英文翻译 :    differential detector
• "功效成分检测室" 英文翻译 :    functional composition test laboratory
• "营养成分检测室" 英文翻译 :    nutrient composition test laboratory
• "分检" 英文翻译 :    [摄影学] go-no-go
• "差分相干检测" 英文翻译 :    differential coherent detection
• "百分检测携带式探测计" 英文翻译 :    percent-test portaprobe
• "差分" 英文翻译 :    difference
• "分检室" 英文翻译 :    mail sorting room
• "部分检验" 英文翻译 :    partial survey
• "成分检定" 英文翻译 :    assay
• "对分检栓" 英文翻译 :    binary search method
• "对分检索" 英文翻译 :    binary search; dichotomizing search
• "对分检索法" 英文翻译 :    binary search program
• "对分检索树" 英文翻译 :    binary search tree
• "积分检波器" 英文翻译 :    integrating detector; quadrature detector
• "积分检验" 英文翻译 :    integral test for convergence

• However , on the other hand , compared with coherent detection , differential detection comes with an evident loss of performance
  但相比于相干检测,差分检测在性能上也会有相当的损失。
• Because of the simplicity of differential detection system , we could consider to apply it to the selective fading channels instead of coherent detection
  由于差分检测的简单易实现性,当信道衰落比较严重时,可以考虑采用该方法替代相干检测。
• Another alternative is consists of two steps , the first step is adjacent difference , the second step is to search the motion regions in the frame being processed
  在进行运动区域提取时，多数文献都直接采用临帧差分检测法，这种方法会影响检测精度。
• Second is to study the moving object detection by difference between images and the problems produced by thresholding , then enhance the image and get its contour
  然后研究了差分检测运动物体后的二值化问题，指出二值化后图像存在的问题以及图像特征增强的方法，并找出运动物体的边缘。
• Because of the time variation of wireless channel , getting the exact channel estimation and good synchronization is difficult for the receiver , so that the differential system could be an attractive choice
  由于信道的时变特性,用户的快速移动等原因,在某些无线应用中,对于同步和获得信道的精确估计值都十分困难,在这种情况下,差分检测就成为了一种很有吸引力的方案。
• Moreover , the demodulation is simulated with matlab to ensure the essential conditions for the detection system to run normally . ( 2 ) a simple and general hardware stage is built , on which the dpsk signal will be differentially demodulated and processed
  在给定系统的技术指标基础上，利用matlab对解调过程进行仿真，确定差分检测系统正常工作需要满足的条件； ( 2 )采用软件无线电的思想，构造了简单通用的硬件平台，软件完成dpsk差分解调和数字处理。
• The method and performance according to the requirements are resolved mostly . main contents as follows : ( 1 ) according to the demodulation guideline , a differential detection system is applied to the dpsk signal demodulator , which is based on the analysis and comparison using the principle of optimal binary signal detection
  着重解决在皮卫星体积结构，重量和功耗限制条件下的方案选择和性能问题，具体内容包括： ( 1 )对一般二进制信号的最佳检测原理进行分析比较，针对本系统要求选择了dpsk信号差分检测系统的方案。
• ( c ) propose the scheme to implementing the coder and deoder of optical time - spreading / frequency - hopping , by assigning two orthogonal codes for one user and using these two codes to encoding 1 and 0 respectively , differential detection can be adopted . not only improves system performances in ber , but also resists the interference such as mai , and does n ' t need any control devices to evaluate the optimum decisive threshold
  通过给每个用户指定互相关为0的两个地址码分别发送1和0信号以及在接收端采用差分检测技术，避免了ook (开关键控)光通信系统中0不发送光脉冲和ook常规检测方式下最佳判决门限必须根椐用户数等外界环境而改变，从而提高了系统性能和降低了系统的复杂度。
• The main characteristics and advantages are : on one hand , we adopted the low - complexity bussgang algorithm , and did blind estimation to ofdm sub - channel according to the mean square error criterion ( mse ) and peak distortion criterion ; on the other hand , we used the differential detection , which accelerates the convergence speed and avoid the error transmission problem resulted from the bussgang algorithm
  这两种算法一方面采用了低复杂度的bussgang自适应算法，分别依据均方误差准则和峰值失真准则对ofdm系统子信道进行盲估计；另一方面通过引入差分检测技术，加快了算法收敛速度，克服了bussgang算法带来的误差传播问题。
• In order to make up this gap , this paper presents a differential detection scheme that serial concatenate a ldpc code to form a iterative detection cycle . moreover , under different channel conditions , simulations show that this scheme can improve the differential system performance considerably , of which may be meritorious to the applications
  所以针对这种情况,本文在第四章提出了一种级联ldpc码的turbo差分检测方案,并通过仿真说明,在级联不同码率的ldpc码下,该方案都可以使差分系统获得明显的性能增益,具有一定的应用价值。