correlation detection meaning in English
相关检波
相关检测
相关探测
相关侦察
Examples
- The correlation detection using the periodicity of the direct sequence autocorrelation function can estimate the symbol period at intermediate frequency or at baseband . simulation results indicate that the former is superior to the latter when the demodulated frequency is unequal to the carrier frequency
时域相关检测方法利用扩频信号的周期自相关特性，能在中频和基带对扩频码周期进行估计，仿真结果表明中频检测时性能较好。 - The square detection can picks up the carrier frequencies , which is simple and has great performance . but this method can ’ t recognize the signal as spread spectrum signal . the spectral correlation detection method can estimates the chip rate of signal ’ s pn sequence
然后,针对异步的cdma信号,采用延迟相乘的方法检测用户数目,同时估计出各用户信号的幅值和相位;该方法的缺点是各用户信号必须有一定的相差,同时用户数不能太多。 - Two detection methods of chirp signals are presented in the dissertation : the cyclic autocorrelation detection method and the correlation detection method of cyclic autocorrelation function . it is shown that the two methods both have an excellent performance of blind detection . the performance analyses of the two detection methods are both carried out for additive noise or multiplicative noise , and the output signal - to - noise ratio ( snr ) expressions of the two methods are also derived
通过研究提出了两种线性调频信号的检测方法?基于循环自相关函数包络的检测方法和基于循环自相关函数的相关函数包络的检测方法，两种方法均可实现信号的盲检测，有良好的检测性能，文中还分析了加性噪声及存在乘性和加性噪声情况下两种检测方法的性能，推导出了输出信噪比公式。 - According to the principle of correlation detection , an automatic measurement system for extinction ratio of polarizer consisted of monochromator and dsp lock - in amplifier and compurer is designed not only to eliminate the influence on measurement accuracy caused by drift of intensity of light source but also to obatain approximate extinction spectrum
摘要基于相干检测原理设计了一套由单色仪、数字锁相放大器和计算机联合使用的透射式偏光镜消光比智能化测试实验系统，采用双频双光路分光单探测器接收锁相放大器分离信号比对法进行源补偿测量，克服了光源光强漂移所带来的影响；实现了可见光区消光比的精确自动测量，而且可以测得近似的消光光谱。 - Optical fourier transformation lens are designed automatically mainly depending on optical design software . after the optical original system being worked out by p , w method , they can be designed automatically by using computer . every parameter of the system is changed simultaneously and aberration is adjusted according to optimizing theory , after the parameters are iterated a lot of times , perfect fourier transformation system is obtained , and the requirement of optical correlation detection can be satisfied
光学傅立叶变换透镜的设计，主要利用光学设计软件进行光学自动设计，用p 、 w法初步计算出光学原始系统，再利用计算机进行自动设计，按优化理论对光学系统的各个参数同时给出不同的改变，进行像差校正，经多次迭代后可得到比较理想的傅立叶变换系统，使该系统能够满足光学相关探测的要求。