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correlation detection中文是什么意思

  • 相關檢波
  • 相關檢測
  • 相關探測
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  • 例句與用法
  • 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
    時域相關檢測方法利用擴頻信號的周期自相關特性,能在中頻和基帶對擴頻碼周期進行估計,仿真結果表明中頻檢測時性能較好。
  • 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,針對異步的cdma信號,采用延遲相乘的方法檢測用戶數(shù)目,同時估計出各用戶信號的幅值和相位;該方法的缺點是各用戶信號必須有一定的相差,同時用戶數(shù)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
    通過研究提出了兩種線性調(diào)頻信號的檢測方法?基于循環(huán)自相關函數(shù)包絡的檢測方法和基于循環(huán)自相關函數(shù)的相關函數(shù)包絡的檢測方法,兩種方法均可實現(xiàn)信號的盲檢測,有良好的檢測性能,文中還分析了加性噪聲及存在乘性和加性噪聲情況下兩種檢測方法的性能,推導出了輸出信噪比公式。
  • 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
    摘要基于相干檢測原理設計了一套由單色儀、數(shù)字鎖相放大器和計算機聯(lián)合使用的透射式偏光鏡消光比智能化測試實驗系統(tǒng),采用雙頻雙光路分光單探測器接收鎖相放大器分離信號比對法進行源補償測量,克服了光源光強漂移所帶來的影響;實現(xiàn)了可見光區(qū)消光比的精確自動測量,而且可以測得近似的消光光譜。
  • 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
    光學傅立葉變換透鏡的設計,主要利用光學設計軟件進行光學自動設計,用p 、 w法初步計算出光學原始系統(tǒng),再利用計算機進行自動設計,按優(yōu)化理論對光學系統(tǒng)的各個參數(shù)同時給出不同的改變,進行像差校正,經(jīng)多次迭代后可得到比較理想的傅立葉變換系統(tǒng),使該系統(tǒng)能夠滿足光學相關探測的要求。
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