例句與造句

1. 3 . accomplished the hardware design of intermediate frequency signal processing 4 . accomplished the software design of intermediate frequency signal processing
   3 .完成了中頻信號處理的硬件設(shè)計(jì)。 4 .完成了中頻信號處理的軟件設(shè)計(jì)。
2. In the digital intermediate frequency project , the intermediate frequency signal is converted to digital signal directly into the dsp chip , then it is be processed by dft
   數(shù)字中頻方案將中頻信號直接通過a / d轉(zhuǎn)換后送入dsp芯片進(jìn)行dft變換，最后得到待測信號頻譜的采樣序列。
3. By analysis of the intermediate frequency signals which through eight antennae and receiver channels , eight channels radio spatial spectrum direction finding system can reach the purpose of finding radio direction
   八通道無線電空間譜測向系統(tǒng)通過分析經(jīng)過八路天線和接收機(jī)通道以后的中頻信號達(dá)到確定無線電信號方向的目的。
4. In this thesis , aimed at the above - mentioned two - side problems , based on analyzing the theory of lfmcw radar ranging deeply , we implement the work of intermediate frequency signal processing
   本論文針對上述兩方面的問題,在深入分析lfmcw雷達(dá)測距理論基礎(chǔ)上,在工程上完成了一部8mm毫米波線性調(diào)頻連續(xù)波測距雷達(dá)的中頻信號處理工作。
5. Due to the hardware characteristic ' s limitation , such as the poor speed of a / d , d / a conversion and dsp process , the most part of sr system adopt middle course . that is to say , by using the special digital converter or running relevant arithmetic , it converts the radio signal to intermediate frequency signal and completes the base - band signal process that is n ' t the veriest sr and is named " software defined radio ( sdr ) "
   由于受到硬件性能如a d 、 d a及dsp芯片處理速度的限制，目前的軟件無線電系統(tǒng)多采用折中的實(shí)現(xiàn)方案，增加專用的數(shù)字變頻器或者運(yùn)行數(shù)字變頻算法，將射頻信號變頻到中頻，然后再進(jìn)行基帶信號處理，這樣的軟件無線電系統(tǒng)又被稱之為“軟件定義無線電” ，它并不是真正意義上的軟件無線電。
6. It's difficult to find intermediate frequency signal in a sentence. 用intermediate frequency signal造句挺難的
7. On the basis of the theory of software radio , this paper discusses how to design and develop a realtime digital signal processing system in graphic programming language on a universal hardware workbench of digital signal processing aiming at satellitic intermediate frequency signal
   本文論述了基于軟件無線電思想，在一個通用的數(shù)字信號處理硬件平臺上，針對衛(wèi)星中頻信號，用美國國家儀器公司提供的開發(fā)虛擬儀器的labview平臺研制開發(fā)了一個實(shí)時的數(shù)字信號處理系統(tǒng)。
8. Simulator presented in this paper provides a direct interface for the test of shortwave communication system , which well represents various features of hf channel such as multi - path delay , rayleigh fading , doppler shift , doppler spread , gaussian noise and impulsive interference , etc . in order to realize the channel simulation for the intermediate frequency signal , we , inspired by the idea of soft - defined radio , bring forward a new design method that the channel simulator consists of several dsp chips
   本文研制的仿真器提供接口直接對短波通信系統(tǒng)進(jìn)行測試,能夠全面反映短波信道的多徑時延、瑞利衰落、多普勒頻移、多普勒擴(kuò)展、高斯噪聲和脈沖干擾等特性。為了實(shí)現(xiàn)對中頻信號的信道仿真,開發(fā)出一個結(jié)合軟件無線電思想的由多個數(shù)字信號處理芯片構(gòu)成的短波信道物理仿真器。
9. The radio frequency receiver supports interface for instrument and base station and air interface for mobile station , and it takes the task of magnifying low noise and down - convert and digital baseband processor filtering and magnifying intermediate frequency to reverse link signal . the digital baseband processor samples the received signal after down - convert radio frequency signal to intermediate frequency signal and processes other processing and supports interfaces to computer , next sends data to computer . the gps receiver supports interface for instrument and gps system , and receives gps system signal , next it demodulates the correlative information and sends out benchmark clock signal we need
   射頻接收部分主要為儀器和基站、移動臺提供空中接口,其主要任務(wù)是在反向鏈路上對接收到的射頻調(diào)制信號進(jìn)行低噪聲放大、射頻下變頻變換、中頻濾波放大等;數(shù)字基帶部分為對接收信號變頻為中頻后進(jìn)行a / d采樣,以及其他的rsp處理并和計(jì)算機(jī)提供接口,將數(shù)據(jù)送至計(jì)算機(jī)進(jìn)行后臺處理、顯示等; gps接收機(jī)部分為儀器和gps系統(tǒng)提供接口,接收gps系統(tǒng)信號并解調(diào)相關(guān)信息,輸出所需的電文及時鐘基準(zhǔn)信息等。
10. This thesis deals with design and application of a multiprocessor made of four dsps in monitoring receiver . the broadband monitoring receiver requires a kind of chip with high performance because of complicated intermediate frequency signal processing . the author selects a kind of digital signal processor called adsp21160 . during the process of design , the author uses cpld , fpga and some special cpus to finish signal , processing in the monitoring receiver . cluster multiprocessor based on vxibus made of four adsp21160 is put forward . the task distribution of four dsps is solved too . furthermore , data transition methods between chips at a high speed through link ports and chip extension mode using external port are recommended . the author debugs , emulates the program in one adsp - 21160 ez - kit lite and simulates the multiprocessor program in visualdsp + +
    本文主要探討了監(jiān)測接收機(jī)中多dsp處理模塊的設(shè)計(jì)與應(yīng)用，寬帶監(jiān)測接收機(jī)的中頻處理數(shù)據(jù)量大、實(shí)時性高，這樣，對dsp芯片提出了很高的要求，作者通過比較選擇了最適用于監(jiān)測接收機(jī)的數(shù)字信號處理器adsp21160 ，并結(jié)合使用了cpld 、 fpga以及一些專用的cpu來完成監(jiān)測接收機(jī)中的數(shù)據(jù)處理。作者提出了由四片adsp21160組成的簇式多dsp處理模塊的結(jié)構(gòu)并配以了vxi總線，論述了簇式結(jié)構(gòu)的特點(diǎn)，解決了多dsp處理模塊中四片adsp21160的任務(wù)分配問題。
11. When the cur - cuit resets , the chip remains accepting state , works in burst mode , and adopts dpsk modulation mode . it proceeds quadrature - sampled intermediate frequency signal after the ad9057 has converted , then down - converses , despreads and demodulates . the demodulated baseband signal will be sended into scm to dispose through interrupt
    上電復(fù)位后，芯片處于接收狀態(tài)，工作在突發(fā)模式下，采用dpsk調(diào)制方式，將ad9057轉(zhuǎn)換完的中頻信號進(jìn)行復(fù)正交取樣后下變頻、解擴(kuò)、解調(diào)，通過中斷將解調(diào)完的基帶信號送入單片機(jī)處理；處于發(fā)送狀態(tài)時，可將數(shù)據(jù)擴(kuò)頻、調(diào)制，經(jīng)ad9768送出。
12. In this thesis , a kind of software method is researched to realize the functions of fast acquisition , tracking and demodulation of pcm - cdma - bpsk intermediate frequency signals . conventional research on spread spectrum signals is in the case of ideal conditions , such as low code rate , narrow dynamic range , narrow frequency - changing range and so on
    本論文將介紹一種軟件模擬硬件的方法來實(shí)現(xiàn)pcm - cdma - bpsk中頻信號的快捕、跟蹤和解調(diào)。關(guān)于擴(kuò)頻信號的傳統(tǒng)的研究是在理想的條件下，比如低碼率、窄動態(tài)范圍、窄頻率變化范圍等等。
13. A / d samples the intermediate frequency signal . the digital signal proceeding part based on tigersharc dsp can process the baseband digital signal including the algorithm of baseband modulation , baseband differential detection and symbol synchronization , etc . digital up converter supports interpolation filter and complex mixer
    A / d對中頻信號進(jìn)行采樣,數(shù)字信號處理部分以tigersharcdsp為核心,負(fù)責(zé)基帶采樣數(shù)字信號的處理,實(shí)現(xiàn)基帶信號調(diào)制,基帶差分解調(diào),符號同步的捕獲和跟蹤等算法。
14. In the analog intermediate frequency project , the signal to be measured is converted to be a fixed intermediate frequency signal , which then is demodulated , logarithm amplified and detected to be a dc signal that can reflect the original signal strength . after passing the a / d converter , it will be processed by microcontroller in software
    模擬中頻方案將待測信號變頻到固定中頻上，對信號進(jìn)行解調(diào)、對數(shù)放大、檢波后，輸出反映待測信號強(qiáng)度的直流信號，通過a / d轉(zhuǎn)換送入單片機(jī)進(jìn)行軟件處理。