tracking spacing 中文意思是什麼
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First, we classify the multipath mitigation techniques into four categories, and then the presentation of principles and simulation of performances are done of three widely - used techniques of multipath mitigation, which are based on the code tracking loop with the name of narrow - correlator - spacing technique 、 els ( early late slope ) technique and medll technique. from the presentation and simulation, the medll technique is selected as the multipath mitigation algorithm in signal processing ’ s scope.
本章首先對多徑消除技術進行了分類，然後主要對基於碼跟蹤環路的三種技術-窄相關（ narrowcorrelatorspacing ）技術、 els （ earlylateslope ）技術和medll （ multipathestimatingdelaylockloop ）技術-進行原理分析和性能模擬，從中選擇medll技術作為接收機信號處理階段的多徑消除演算法。 -
Air export operation : offering and handling the full set of services including spacing booking with airlines in both tianjin and beijing, documentation, trucking arrangement, tracking shipping information, etc
空運出口操作部：提供訂艙、單證，提貨信息查詢等服務。
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