terrestrial channel 中文意思是什麼

terrestrial channel 解釋
地上通道
  • terrestrial : adj 1 地球（上）的。2 地上的（生活等），人間的 （opp celestial） 現世的。3 陸地的，陸生的，陸棲的...
  • channel : n 1 水路，水道，渠，溝；海峽；河床，河底。2 （柱等的）槽，凹縫；【機械工程】槽鐵，凹形鐵。3 〈比...
  1. The paper divided turbidite fan in deep water from long source into braided channel microfacies, inter - braided channel microfacies, medium fan over - belt microfacies, and external fan subfacies, and divided slump turbidite which related with delta into medium fan subfacies and external fan subfacies, and summed up 15 kinds of marking of subfacies and microfacies classification. at the same time, it formed a series of effective technology of analyzing turbidite source at the base of studying region geological which combined with analyzing the content change of terrigenous debris, with the found of logging facies, and with the ancient terrestrial magnetism test and other technology means under the guidance of three - dimensional model of turbidite which has been founded already and the flat surface feature of microfacies

    將遠源深水濁積扇劃分為辮狀水道微相、辮狀水道間微相、中扇過渡帶微相和外扇亞相；將與三角洲有關的滑塌濁積扇劃分為中扇和外扇兩個亞相，並總結了濁積巖沉積劃分各種亞相、微相類型的十四種標志，分別為:巖石類型、層理類型、砂巖單層厚度、粒度結構特徵（粒度中值、分選性、概率曲線） 、生物化石、儲層物性（孔隙度、滲透率） 、泥巖隔層特徵（泥巖單層厚度、層數、顏色） 、鮑瑪層序組合和自然電位曲線特徵。
  2. Will it be may 27 2001, channel u in established by xiang river by pretty hillfoot of yuelu mountain, face city crowd, terrestrial surface radiation only synthesizes the channel

    2001年5月27日，湖南電視臺都市頻道在鐘靈毓秀的麓山之側、湘水之濱橫空出世，是面向都市人群、地面輻射的唯一綜合頻道。
  3. In this paper, we first introduce the development of high definition television in our country and the principle of cofdm technique, followed by comparing the two channel transmission standards between atsc and dvb - t for digital terrestrial television

    本文介紹了高清晰度數字電視在國內的發展狀況，並將國際上的兩大數字電視地面廣播通道傳輸標準atsc和dvb - t進行了比較，在此基礎上進一步闡明cofdm傳輸系統的原理和特點。
  4. As the step of the color tv ( the second generation ) to the digital tv ( the third generation ) is larger and larger, the research of digital television terrestrial broadcasting ( dttb ) become more and more important in china, we are concentrating on the standard of dttb which is suit for our country after describing and analyzing the technical stipulation and speciality of dttb, this paper compares atsc 8 - vsb with dvb - t cofdm and isdb - t bst - ofdmo the emphasis of this article lies in the technical solution about transferring system, channel coding is important component of dttb, which can resist from the bad circumstances o because of lots of varieties and different performance, channel coding become one of the emphasis of the research work this paper analyzes and researches the theory and performance of the different channel coding particularly, points out an effective theoretic analysis method and computer demo of performance comparison a theoretical method for estimating the performance of concatenated codes is proposed in this paperc this is achieved by combining the performance of single level coding rayleigh fading channel and the character of channel modulation it may be useful to research and development of the future digital television terrestrial broadcasting standard of our country

    通道糾錯編碼是數字電視地面廣播傳輸系統的重要組成部分，是抵禦地面惡劣環境的有效手段。由於通道編碼的種類繁多，性能各異，因此是目前研究工作的重點之一。本文詳細分析和研究了幾種通道糾錯編碼的原理和性能，並針對外碼內碼級聯糾錯結合地面通道瑞利衰落提出了一種有效的理論分析方法和性能的計算機比較演示方案，總結了不同級聯方案的性能特點，對於我國目前的數字電視地面廣播標準的研究和通道級聯糾錯方案的確立及其參數選擇具有一定的參考價值。
  5. Standards of digital tv broadcast has specified transmitting systems which are based on various medium such as satellite - oriented transmitting system ( dvb - s ), cable - oriented transmitting system ( dvb - c ), terrestrial - oriented transmitting system ( dvb - t ). different system adopts different methods of channel codec, modulation and demodulation, but for signal source block codec, only mpeg - 2 standard has been applied for all the systems. as a compression standard being specified in digital tv broadcast transmission, mpeg - 2 has been widely involved on compression occasion

    對于數字電視信號的傳輸，數字電視廣播標準制定出基於多種媒質傳輸的傳輸系統，如衛星傳輸系統（ dvb - s ） ，電纜電視傳輸系統（ dvb - c ） ，地面廣播（ dvb - t ） ，不同的傳輸系統制定不同的通道編碼和調制解調的方法，但是對于所有傳輸系統的信源編碼則一律採用mpeg - 2這一標準。
  6. Tetra ( terrestrial trunked radio ) digital trunked radio communication system is a kind of advanced private mobile communication system and is a radio directed communication system, which can share resource, expenditure and channel equipments, provide kinds of services and have high efficiency

    Tetra數字集群系統是一種高級專用移動通信系統，是共享資源、分擔費用、共用通道設備和服務的多用途、高效能的無線調度通信系統。
  7. The paper discusses the part of asic design of tcm ( trellis coded modulation ) in hdtv 8vsb terrestrial channel broadcasting receiver chip. in testing, the tcm can improve the signal - to - noise by 3. 3db compared with uncoded 4 - vsb modulation, and with the 12 path intrasegment interleaving in tcm coding and viterbi decoding, system can control short burst noise error efficiently

    在高清晰度電視通道接收晶元中內碼是8 ? vsb的格狀編碼，在系統性能上使用tcm編碼要比未編碼有3 . 3db的編碼增益，另外在格狀編碼中加入了12路的內交織，可有效的抑制短的突發噪聲對接收端viterbi解碼性能的影響。
  8. Methods of measurement for equipment used in terrestrial radio - relay systems. part 2 : measurements for sub - systems. section two - stand - by channel switching equipment

    地面無線電接力系統所用設備的測量方法.第2部分:分系統測量.第2節:備用波道倒換機
  9. This project is oriented for the implementation of the receiving end of dvb - t channel, and pda receiving card based wince ( windows ce ) os. the end is engaged for receiving the downriver broadcasting data from the terrestrial channel. the project is based on the in - deep study of the dvb - t standard and the dvb data broadcasting specification

    採用數字地面電視dvb - t / cofdm技術，設計製作通道接收機，本文稱其為pda的接收板，並設計基於pda操作系統wince （ windowsce ）驅動程序，通過定製操作系統的方式載入pda ，實現數字視頻的移動接收。
  10. New algorithm and new structure have been developed to make the equalizer to get better performance on combating with seriously distorted channel fading : strong echo fading, large delay spread static and dynamic echo fading. main contents of this paper are as follow : in the first chapter, the history > present situation of the dtv system is presented. five dtv terrestrial broadcasting systems are introduced and two of them are compared, e. g

    本文主要內容如下：第一章概述了數字電視技術的發展歷史和目前的狀況，給出了目前已經成型的5種地面廣播標準；對兩種比較典型的傳輸標準： dvb - t和atsc作了性能對比分析，並將比較的焦點集中到對抗強多徑衰落和長時延的靜態和動態多徑衰落的性能上。
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