例句與造句

1. Two - dimensional harmonics frequency estimation in additive gaussian noise background based on quaternion and hypercomplex
   四元數(shù)和超復(fù)數(shù)在加性高斯噪聲背景下二維諧波頻率估計中的應(yīng)用
2. First , the thesis introduces the definitions and the attributes of the higher - order statistics . it is insensitive to additive gaussian noise ( white or colored ) , which is what we base on to doa problems . then two doa estimation algorithms based on higher - order statistics are presented , one is that forming cumulant matrix pencil used in esprit to estimate doa problems , the other is spectrum estimation method for doa estimation based on the eigenstructure analysis of the fourth - order cumulant , and comparing the effects of the estimation to conventional covariance - based doa algorithms "
   論文首先對高階統(tǒng)計量的定義和性質(zhì)作了介紹，特別指出了高階統(tǒng)計量對加性高斯噪聲(白色或有色)不敏感，這是我們利用它進行波達方向估計的理論依據(jù)，然后文中提出了兩種基于高階統(tǒng)計量的波達方向估計方法，一種是利用子空間旋轉(zhuǎn)不變技術(shù)構(gòu)造四階累積量矩陣進行估計的方法，另一種是基于四階累積量陣特征分解的空間譜估計測向方法，并將它們的估計效果與傳統(tǒng)協(xié)方差方法的效果進行比較。
3. Based on fourth - order cumulant , a computationally efficient method for joint estimating both directions of arrival and ranges of near field sources with known carrier frequency is firstly presented . the proposed algorithm need not any spectral peak searching and the 2 - d parameters are automatically paired . lt is suitable for arbitrary additive gaussian noise environment . in the following section , a 3 - d esprit method for jointly estimating of frequencies , doa ' s and ranges of multiple near - field sources with unknown carrier frequencies is proposed . the parameters estimation are given by the eigenvalues of different matrices . furthermore , its performances are confirmed by several computer simulations
   利用四階累積量，第五章首先給出了一種載頻已知的情況下基于近場源的距離和波達方向聯(lián)合估計算法，通過構(gòu)造的陣列輸出信號四階累量矩陣使空間信號到達方向和距離估計無需譜峰搜索，且參數(shù)自動配對，適合于任意高斯噪聲環(huán)境。進一步在第三節(jié)提出了一種載頻未知的情況下的多個近場窄帶信號源doa 、距離和頻率聯(lián)合估計的3 - desprit算法。
4. Higher - order cumulants are blind to additive gaussian noise ( white or colored ) and this is the theoretical advantage of higher - order cumulants . secondly , the thesis introduces the doa problems and the widely used music method . to overcome the shortcomings of the traditional music method , the thesis proposes the foc - music method , which has better performance than the traditional music method
   本文首先介紹了高階統(tǒng)計量的定義和性質(zhì),特別指出了高階累積量對加性高斯(白色或有色)噪聲的盲性,這是利用它進行波達方向估計的理論優(yōu)勢;其次,文中介紹了波達方向( doa )估計問題和doa估計中應(yīng)用最廣的多信號分類法( music ) 。
5. It's difficult to find additive gaussian noise in a sentence. 用additive gaussian noise造句挺難的