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channelize vt.=channelvt.n.-ization

channelled

It points out that the signal which is located on the edge of filter is changed but still keeps the characteristics of lfm signal , so traditional lfm signal parameter estimation algorithms can be used . ( 3 ) the effects of parameters of analog - digital channelized receiver on lfm signal parameters estimation are discussed ( 2 )對超寬帶線性調頻信號通過信道化之后的頻譜結構變化進行了定性的分析,指出超寬帶線性調頻信號在通過信道化之后,其位于信道邊緣的部分發生了較小變化,但仍具有線性調頻信號特征。

The main achievements of the dissertation are included : ( 1 ) the limitations of the traditional channelized reconnaissance receivers indicate that it cannot be used to receive the ultra - wide radar signal . it is pointed that the ultra - wide receiver must satisfy ultra wide monitoring band , high sensibility , wide dynamic range and almost real - time response 論文主要工作如下: ( 1 )分析了多種傳統信道化接收機的結構性能,及其在超寬帶信號接收中的局限性,指出超寬帶信道化接收機必須滿足實時性、高靈敏度和大動態范圍等性能。

This dissertation investigates primarily the channelized receiver ’ s application in electronic reconnaissance , and puts forward a project of the wideband signal reconstruction system including 4 - band efficient channelized receivers and a project which is 8 - band efficient digital channelized ifm receiver , then testifies them with simulation 文中重點討論了信道化數字接收機在電子偵察中的應用,提出了基于數字信道化高效結構的4信道重建系統方案和8信道ifm接收機方案,并通過系統仿真論證了方案的正確性。

The channelized digital receiver based on srd is the electronic equipment , which can be used in communication and military affairs , because of its excellence on wide band frequency coverage , digital processing , software programming , high dynamic range , receiving signal with all probability , simultaneous signal detection and so on 基于軟件無線電思想的信道化數字接收機是一種即可用在通信領域也可用在軍事領域的電子設備,具有大帶寬、數字化、軟件化、大動態范圍、全概率接收、多信號同時處理等優點。

Consulting relevant reference and related theories in software radio , this thesis is working on technologies of digital channelized receivers , including the theories on a / d sampling , digital down converter , multi - velocity signal processing , polyphase filter and uniform dft filter bank 本文針對電子偵察系統數字化實現,對數字式信道化接收機的相關技術進行了研究:包括a / d采樣的理論、數字下變頻相關理論、多速率信號處理的理論、多相結構優化抽取濾波、均勻dft濾波器組。

Now , there are four evaluation methods in this field , every method has its advantages and shortages and most of them are established based on highway . high weight communication , great loads channelized traffic and high speed is the expressway ' s feature , there is great difference in the development law between highway and expressway . we will get some unfitness result by using those evaluation methods to evaluate expressway 目前國內外常用的四類路面使用性能評價方法中回歸法評價結果與實測數據相關性不太理想,系統分析法客觀性不強,灰色理論法存在一定的主觀經驗性,其它一些方法還處于研究階段;而且這些方法都是基于普通公路建立,高速公路具有交通量大、汽車軸載重、交通渠化和行車速度高等特點,路面使用性能的特點和發展變化規律與普通公路存在較大差異。

The paper gives a kind of fft channelizing scheme used in the item , by analyzing different methods of reconnaissance and jamming for hopping frequency communication . and the paper gives a kind of design of frequency synthesis system on the basis of fpga and dds technology , and fpga is used to control the dds chip to produce different jamming signal 文章通過對目前各國正在研究使用的幾種跳頻通信偵察方案以及通信對抗中所用的各類干擾方式的介紹與分析比較,提出了一種在本實驗系統中應用的fft -信道化偵察測頻方案,并在此基礎上設計了一種基于fpga和dds技術的頻率合成模塊,采用fpga控制dds芯片產生各種干擾信號。

As the modern highway transportation characterized with high speed , high traffic density , heavy load and channelized traffic , the technology of asphalt pavement have been changed greatly and many methods had been developed to improve the performance of asphalt pavement , such as the superpave ? , the technology of modified asphalt , the sma , etc . . among them , the fiber strengthened asphalt pavement is a successful alternative both domestically and overseas 為了適應現代交通速度快、交通密度大、軸載重、渠化交通明顯的特點,瀝青路面技術發生了較大的變化,高性能瀝青路面superpave ~ ( tm ) 、改性瀝青技術、 sma等得到了應用,而纖維瀝青路面以其技術性能優良、經濟上合理等特點受到人們的關注,具有廣闊應用前景。

And designed a program used by this method to design a filter . the result complies with the analytic result . at the end of this paper , according to the project of airline broadcast , the author designd filter with high rectangular factor , five channelizing filter banks , saw programmable correlator implemented with multiplayer muti - chip technology , saw resonator 本文的最后,結合某航空直擴數傳電臺的工程要求,設計了高矩形系數的前置濾波器、聲表面波濾波器組、采用多芯片組裝厚膜工藝技術的聲表面波可編程相關器和聲表面波壓控振蕩器,完成了解調解擴單元的硬件設計。

Channelized receiver with poly - phase filters is an appropriate solution . in this thesis , the design and implementation of channelization processing are studied systematically . meanwhile , we put forward a new implementation method and get some conclusions and achievements 本文結合具體的研究項目,對基于多相濾波的數字信道化接收機中的信道化處理進行了系統的研究,并提出了一種新的實現方法,取得了部分研究成果。

A modified real signal model of channelized transmitter is presented that employs multiphase filters and discrete fourier transform to maximize computing efficiency , which can mean much in a radio communication system that requires real - time processing 特別提出了改進的實信號信道化發射機數學模型,通過利用多相濾波與離散傅立葉變換,減少信號處理運算量,這對于強調實時運行的無線通信系統有重要意義。

( 2 ) an analog - digital channelized receiver is given . two key techniques of this receiver , including how to achieve data conversion effectively and frequency estimation precisely , are introduced briefly . the change of channelized lfm signal is discussed 給出了一種目前可實現的模數混合信道化接收機方案,簡要介紹這種接收機的關鍵技術? ?高效的數據率轉換以及超寬帶線性調頻信號測頻算法。

The frequency curve of transverse distribution of the wheel track on divided ways reveals that the frazzled damage of highly channelizing expressway cement concrete pavement largely occurs in the peak range of distribution curve of the wheel track 摘要分車道行駛輪跡橫向分布頻率曲線顯示,渠化程度較高的高速公路水泥混凝土路面磨損破壞主要集中在行車道輪跡峰值范圍。

Digital channelized receiver is good at real - time signal processing , especially at improving ability of whole probability capturing as well as resolving the problem of channels ’ in - equilibrium of analog channelized receiver 數字信道化接收機可以提高實時處理能力,特別是提高全概率截獲能力,并且可以有效地解決模擬信道化接收產生的信道不均衡的問題。

This dissertation proposes to adopt poly - phase filtering channelized receiver to receive the special multi - carrier ds - cdma signal , which is studied by this dissertation , and use digital matched filter to de - spread signal 在此基礎上提出采用多相濾波器組信道化接收機來接收本文研究的多載波擴頻通信信號,并使用數字匹配濾波器進行解擴。

Based on upper study deeply the efficient digital channelized architectures based dft polyphase filter banks to deduce and establish several kinds channelized digital receiver mathematic models for real signal 在此基礎上深入研究了基于多相dft濾波器組的數字信道化高效結構,推導并建立了實信號信道化數字接收機的多種數學模型。

And we carry on carefully the theoretical research and systematic analysis of channelized receiver with poly - phase filters . in addition , we carry on simulations for channelization processing module 針對基于多相濾波的數字信道化接收機,進行了仔細的理論研究和系統分析,并在此基礎上,對信道化處理部分進行了仿真實現。

In this dissertation , the analog - digital channelized receiver is studied . the optimized system , spectrum reconstructing and accuracy signal frequency estimation algorithms are researched 本文研究了模數混合信道化接收方案,著重研究其優化結構和關鍵技術以及線性調頻信號參數估計算法。

In this dissertation , we mainly study the efficient architecture of channelized digital receiver , discuss the particular realization approaches , then testify them with simulation 本文主要研究了信道化數字接收機的高效結構,討論了具體實現方案并進行了仿真驗證。