radio coding 中文意思是什麼
radio coding
解釋
無線電編碼-
On the base of researching the theory of the scheme and analyzing the signal feature, it is obtained that the existence manners and character of distance information in the differential frequency signal. at the same time, a new conclusion is gained that the technology of frequency agility can decrease the constant error of system. it is also to say that frequency agility and frequency modulation fixed - distance fuze has the similar feature to random period frequency modulation fixed - distance fuze. according to the theory of address coding in the hopping - frequency communication, the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the rs codes
在深入研究方案原理和分析信號特徵的基礎上，獲得了該體制引信差頻信號中，距離信息的存在形式和特點，得出了頻率捷變技術的引入降低了系統定距固定誤差這一新的結論，即頻率捷變調頻定距引信在定距性能上具有類似隨機周期調頻定距的特徵。本文引入跳頻通信地址編碼理論，結合無線電引信的具體特徵，提出了適用於無線電引信的頻率捷變序列的選擇原則，並構造了基於rs碼的寬間隔頻率捷變序列族。 -
It has also been proved correct in practice by testing with cooperator. the paper analyzed the character of our radio and introduced the procedure of designed base band frame architecture. it showed the application of channel coding in our radio, and encode / decode method implemented in dsp
本文針對本電臺的特點介紹了基帶幀結構的設計，重點介紹了幾種常用通道編碼在本電臺的應用，以及編解碼方法在dsp中的實現，並從理論上分析了通道編碼給本電臺帶來的處理增益。 -
Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding
本文首先介紹了相關的軟體無線電理論；然後完成了包括數據格式，調制方式，糾錯碼方式，交織器和擾碼器等部分的中頻數據機通道設計；接著著重介紹了系統中使用的音頻壓縮演算法cvsd （連續可變斜率增量調制）的原理和實現，以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。 -
Chosen the cvsd as the radio station ’ s voice coding. the character of strong anti - interfere in real communication circumstance was our major consideration to choose cvsd. as to validate the algorithm of cvsd and get the better parameter, we do the cvsd algorithm simulation firstly with matlab and the simulation tested the algorithm as well as given us some tips during the hardware debugging
在實際設計和實現語音編碼過程中為了對硬體編程語言有好的指導作用以及得到比較好的編碼參數，首先用了matlab對語音編碼進行了模擬，通過模擬驗證了演算法同時獲得的參數為實際的硬體實現提供了一定的參考價值，也給我們的實際調試指出了方向性的指導。 -
Common physical identification systems that are used to track food product and ingredients include the use of bar coding and radio frequency identification rfid
用於溯源食品和食品成分的普通物理認證系統包括條形碼和無線射頻識別技術 -
One important feature of radio signals ’ is that the signals are easy to catch and to disturb. in order to disturb the radio signals, parameters, including code rate, modulation, protocol, protection methods and channel coding, about satellite ’ s signals should be known. so, it is possible to receive the data from satellites and obtain lots of information from it, and even to destroy the undesired information
衛星通信系統的遙控遙測信息都是通過無線通道傳遞，而無線電信號的一個很重要的特性就是發射易被接收、易被干擾，實現干擾的前提是對衛星信號參數的極大了解，這包括明確信號的碼速率、調制方式、所用協議、保密措施及通道編碼等，因此，通過接收衛星數據以獲取大量的未知信息，甚至破壞掉對己的不利信息就成為可能。 -
Space - time coding technology is based on multi - elements antenna array and has strong points of both time processing and space processing. it can satisfy the requirements of high data rate transmission in the future radio mobile system without the increase of the transmitting power and the spread of the frequency. and it can greatly improve the quality of communication services and system capacity under fading channels
空時編碼技術是一種利用多天線陣發送和接收的技術，該技術能很好地結合時間處理技術和空間處理技術的特點，能在不增大發射功率和不擴展頻帶的前提下滿足未來無線移動通信對高數據率傳輸的要求，從而全面提高衰落通道的通信質量和通信系統容量。 -
First, the thesis introduced conception and characters of software radio ; second, the thesis analyzed architectures of software radio ; third, the thesis discussed critical technologies of software radio and applications of dsp in software radio, moreover, realized arithmetic of crc coding, convolution code, orthogonal digital frequency conversion and multi - speeds signal process ; finally, the thesis prospected foreground of software radio
本文首先介紹了軟體無線電的概念和特徵，接著分析了軟體無線電體系結構，論述了軟體無線電的關鍵技術及dsp在軟體無線電中的應用，在tms320c54x上實現了crc編碼、卷積碼，完成了正交數字變頻和多速率信號處理的dsp演算法，最後展望了軟體無線電的應用前景。 -
Future mobile communications have to support the transmission of high rate data and multimedia applications in the radio spectrum, which is already extremely scarce. the basic idea of adaptive coded modulation is to maintain a constant throughput by varying the transmitted power level, symbol transmission rate, constellation size, coding rate or any combination of these parameters. thus, without sacrificing bit - error rate ( ber ), these schemes provide high average spectral efficiency by transmitting at high speeds under favorable channel conditions, and reducing throughput as the channel degrades
自適應編碼調制（ adaptivecodedmodulation ， acm ）的基本思想是在不犧牲系統傳輸性能（比如ber ）為代價的前提下，通過單獨改變發送功率、波特率、編碼方案、碼率、調制方式，或者是綜合改變前面所述的各種參數，在有利的通道條件下，獲得較大的吞吐量，當通道質量下將時，相應地降低傳輸速率，最終達到提高平均頻譜效率的目的。 -
On theory, the paper analyzed the coding gain of the channel coding. the character of our radio is the flexibility, standardization and modularization by application of software radio theory
本項目主要的特點在於軟體無線電理論的應用所帶來的系統的靈活性，並使電臺具有模塊化、標準化和通用化的特點。 -
2. the design of computer control system by combining plc with technical computer came ture, and discussed the problems of plc hardware configuration, plc control software and the software design of 3. design and tailor the module of communication translation from profibus to rs232 / 485, and discussed the methods of use and programme. it fingures out the communication translation between profibus - dp simens commen used communication protocol and rs232 / 485 hardware equipment. it makes the commen equipment ( for example : the module of radio communication, the module of coding cable position detection, and so on ) using rs232 / 485 can be used as substation to switch in the system of simens, and extensions the range of the system of simens plc
3 、設計製作profibustors232 / 485通訊轉換模塊，並對該通訊轉換模塊的使用及編程方法進行了討論。解決了西門子常用通訊協議profibus - dp到rs232 / 485協議硬體設備之間的通訊轉換問題，使採用rs232 / 485通訊的通用器件（如mds無線通訊模塊、編碼電纜位置檢測模塊等）可以作為profibus - dp分站接入西門子plc系統中，大大擴展了西門子plc系統的應用范圍。
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