base elevation 中文意思是什麼
base elevation
解釋
基線標高-
2 ) the quantity of eal increased largely compared with the former set, for example each base station elevation 13 %. 3 ) operation receipt enhanced by 20 %
我通過多次試驗總結出了500mw於10mw基站共同組網的方法，從而制定出完整可行的網路改造方案。 -
Fortunately, we can solve this problem by using ap ( alternating projection ) algorithm, by this way ; the computational load can reduce dramatically. doa estimation is mostly research base on linear array, because of the limitation of linear, it can estimate the azimuth only ; solid array can estimate the azimuth and elevation, in this paper, the solid array is used for doa estimation ; when the signal sources are uncorrelated, the music algorithm is chosen, using mdl / aic algorithm, we attain the signal number of sources
本文採用立體六元陣進行測向，在非相干信號源條件下，採用music演算法進行doa估計，採用基於信息論原理mdl準則或者aic準則判斷信號源數目，通過對陣列流形的研究，指出基於圓陣的陣列流形具有的某種對稱性，利用該對稱性來降低運算量，並且通過對演算法的研究，提出用維數較小的信號子空間或噪聲子空間來計算空間譜，進一步減小music演算法運算量。 -
A description is made of the problems encountered in gps leveling measurement in this field and countermeasures. as observation of ground subsidence is made through measuring the relative movement of the observation stations, it is proposed to base the subsidence observation on change of geodetic elevation. check is made of the accuracy and reliability of this observation method by citing typical examples
介紹了gps水準測量中的若干問題及其解決方法，結合開采沉陷監測需要的是相對變化量的特點，為避免坐標轉換造成的精度損失，提出了開采沉陷觀測中的下沉值可應用大地高的變化量代替的方法，並對其精度及可靠性進行了實例驗證。
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