near detector 中文意思是什麼
near detector
解釋
近檢波器-
Near - infrared light source and detector were located on the surface of the fat and a part of the photons reflected by the two - layered structure of the tissue were detected
將近紅外光源和檢測器置於脂肪的表面，由光源發出被兩層組織反射的光子的一部分由檢測器所接收。 -
Conventional detector ( single - user matched filter ) distinguishes each user by the crosscorrelation of their spread - spectrum codes. in practice, however, its performance is much deteriorated due to the existence of noise in channel and strong multi - access interference, i. e. near for effect. a new method using independent component analysis is proposed in this paper. the - received energy of signals is controlled effectively, thus the near - far effect is overcome as much as possible ; moreover, the effect that noise imposed on the detector is mostly reduced. simulations verify the effectiveness of this method
傳統檢測器（單用戶匹配濾波）利用擴頻碼之間的互相關特性來區分各用戶信號.而在實際應用中，通道噪聲和近距離用戶對遠距離用戶的強多址干擾即遠近效應，使得接收機的性能受到很大影響.本文將獨立分量分析法引入傳統接收機，有效控制接收信號的能量，從而極大地提高了接收機的抗遠近性能，同時噪聲的影響被盡可能消除.模擬結果表明了該方法的有效性和可行性 -
We began to do our own testing at home, slamming doors, holding him near the smoke detector and setting it off
我們開始在家裡自己來做測試，拍打房門，把他帶到煙霧報警器旁邊打開報警器。 -
The optimum multiuser detector proposed by verdu can solve the problem of mai and near - far effect of cdma communication system
由verdu提出的最優多用戶檢測器（ omd ）能夠解決cdma系統多址干擾及遠近效應。 -
Multiuser detector ( mud ) makes full use of the information of all the users that cause multiple access interference ( mai ) to detect the desired user. therefore, as compared with the conventional detector, it has better resistance capability to the mai and the so - called near - far problem. since the multi - user detector reduces the precision requirement of the power control, it can provide higher efficiency for frequency use, and thus improves the capacity of the communication system
多用戶檢測技術在傳統檢測技術的基礎上，充分利用造成mai干擾的所有用戶信號信息對單個用戶的信號進行檢測，從而具有優良的抗干擾性能，解決了遠近效應問題，降低了系統對功率控制精度的要求，因而可以更加有效的利用頻譜資源，顯著提高系統容量。 -
Multi - user detector ( mud ) is one of the key techniques for these problems in cdma systems, which deals with multiple access interference as useful information and eliminates it by utilizing correlation characteristics between signature waves. mud techniques can dramatically relax " near - far " effects, significantly improve the system ' s performance and increase the capacity of cdma systems
它將信號中的多址干擾看作一種有用信息，利用擴頻序列之間的互相關性來消除多址干擾，能減輕「遠-近」效應影響，改善系統的性能，提高系統的容量。
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