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- Secondly , basing on single channel if sr receiver mathematic model , this thesis has designed if sr receiver subsystem and brought forward its design project and system circuit principle diagram , and explained the system working principle . furthermore , this thesis introduces the working principles and respective applications of wideband high - speed adc ad6640 , ddc ad6620 and high - speed dsp tms320c6713 according with the if sr receiver subsystem high - speed analog digital conversion department , digital down conversion department and high speed digital signal processing department . thirdly , the thesis emphatically demonstrates the software realization department of the if sr receiver subsystem , which including ad6620 ' s inner parameter software setup , tms320c6713 data transmission and processing and the quadrant demodulation algorithm program realization
其次，基于單通道中頻軟件無線電接收機(jī)數(shù)學(xué)模型，本文設(shè)計(jì)了中頻( if ， intermediatefrequency )軟件無線電接收機(jī)子系統(tǒng)，給出了中頻軟件無線電接收機(jī)子系統(tǒng)的設(shè)計(jì)方案和系統(tǒng)電路原理圖，說明了系統(tǒng)工作原理，并分別對(duì)應(yīng)系統(tǒng)中的高速模數(shù)轉(zhuǎn)換部分、數(shù)字下變頻部分、基帶數(shù)字碩士學(xué)位論文軟件無線電理論研究及中頻軟件無線電接收機(jī)子系統(tǒng)設(shè)計(jì)信號(hào)處理部分，介紹了高速adcad664o ，數(shù)字下變頻器( ddc ， digitaldownconverter ) ad6620 ，高速數(shù)字信號(hào)處理器( dsp ， digitalsignalproeessor ) tms320c6713的工作原理，以及它們?cè)谥蓄l軟件無線電接收機(jī)子系統(tǒng)中的應(yīng)用。 - In this thesis , at first introduce the general principle of gpr , next analyze the signal model of gpr and also declare the signal process theories used in this thesis and at last accomplish the clutter reduction and synthetic aperture algorithm program using matlab and also identify the algorithm program through the simulation of two groups of actual measurement data
本文中首先介紹了探地雷達(dá)的一般原理；其次分析了探地雷達(dá)回波數(shù)據(jù)的信號(hào)模型并說明了本文中用到的信號(hào)分析的方法；最后針對(duì)雜波抑制和合成孔徑這兩部分處理在matlab軟件環(huán)境中設(shè)計(jì)完成算法程序，并通過實(shí)測(cè)數(shù)據(jù)仿真驗(yàn)證算法的正確性和效果。 - Agv ( automated guided vehicle ) optimization is a typical np problem , in the course of initial group generation , this article applied accumulator process , crossover operator based continuous insertion heuristic mode , and push - connect - exclude method . according to stacker running process and characteristics , stacker optimization was devided into two parts , the first one was shelves number optimization , the second one was travel scheduling problem . finally , this article written genetic algorithm program based on c
Agv的優(yōu)化調(diào)度屬于典型的np問題，在初始群體的產(chǎn)生中，采用聚加過程，并建立了可行插入的條件；提出了基于連續(xù)插入啟發(fā)式的交叉算子；采用了推?銜接?排除過程來使任務(wù)的滿意度達(dá)到最佳；針對(duì)堆垛機(jī)的運(yùn)行過程，建立了數(shù)學(xué)模型，并依據(jù)其運(yùn)行特點(diǎn)，把堆垛機(jī)的優(yōu)化分為兩部分，一是針對(duì)庫位號(hào)的優(yōu)化，改變傳統(tǒng)的庫位號(hào)排列方式，利用遺傳算法建立起比較合理的庫位號(hào)排列順序；二是把堆垛機(jī)的運(yùn)行線路簡(jiǎn)化為旅行商問題，并做了適當(dāng)?shù)男薷摹? - The g . 729 speech - compressing algorithm , written in c language , produces a huge amount of program codes , which cannot be stored in the chip - memory of dsp because of its 16k storing space . therefore , g . 729 speech - compressing algorithm written in c language is faced with the problems of low processing speed , and synthesis ( or real time ) . the main goal of this paper is to accomplish g . 729 speech signal compressing algorithm programmed in c54x general assembly language , and to overcome the problems above
在利用tms320vc5402進(jìn)行語音信號(hào)壓縮處理時(shí)，其開發(fā)軟件提供了支持c等高級(jí)語言編譯器，但該dsp的片上存儲(chǔ)空間僅有16k ，如果選用c語言編程實(shí)現(xiàn)g . 729語音壓縮算法，程序代碼量過大很難都存放在片內(nèi)存儲(chǔ)器，這樣運(yùn)算速度降低，很難解決實(shí)時(shí)(或同步)問題。 - The proposed driving circuit includes a low - pass filter circuit 、 feedback circuit 、 signal generated circuit 、 phase shifted circuit and power inverter circuit . a ti cooperation ' s dsp ( tms320lf2407a ) is chosen for the drive and control system based on the characteristics of usm , the interface circuit 、 each function ’ s flow chart and algorithm program are designed
根據(jù)usm的特點(diǎn),選取一款專用于電機(jī)控制的dsp芯片tms320lf2407a ,設(shè)計(jì)了硬件接口電路、各功能部分的流程圖及控制算法程序,以ccs為編譯環(huán)境,進(jìn)行電機(jī)整個(gè)控制系統(tǒng)的軟件編寫與調(diào)試。