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1、2013-05題錄英譯集**********************************************************************************基于DDS+倍頻的寬帶LFMCW雷達(dá)信號產(chǎn)生設(shè)計(jì)曾維貴,孫迎豐,胥輝旗(海軍航空工程學(xué)院科研部,山東煙臺264001)摘要:針對常規(guī)LFMCW信號產(chǎn)生方式存在的不足,提出一種DDS+倍頻的寬帶LFMCW雷達(dá)信號產(chǎn)生方案。在分析直接數(shù)字頻率合成信號產(chǎn)生和線性調(diào)頻連續(xù)波雷達(dá)基本原理的基礎(chǔ)上,給出寬帶LFMCW信號產(chǎn)生設(shè)計(jì)流程圖,進(jìn)行了硬件實(shí)現(xiàn),并對其相關(guān)功能和
2、指標(biāo)進(jìn)行測試。測試結(jié)果表明:該方案實(shí)用性強(qiáng),靈活性高,硬件實(shí)現(xiàn)難度小。設(shè)計(jì)的硬件平臺輸出信號具有調(diào)頻速度快、頻率分辨率高、雜散水平相對較低、帶內(nèi)穩(wěn)定平坦的特點(diǎn),可以滿足雷達(dá)系統(tǒng)距離高分辨的要求。關(guān)鍵詞:直接數(shù)字頻率合成;寬帶LFMCW;倍頻DesignandImplementationofWidebandLFMCWRadarSignalGenerationBasedonDDSandFrequencyMultiplicationZengWeigui,SunYingfeng,XuHuiqi(DepartmentofScientificResea
3、rch,NavalAeronautical&AstronauticalUniversity,Yantai264001,China)Abstract:Accordingtothedeficiencyofconventionalsignalgenerationmethodforlinearfrequencymodulationcontinuouswave(LFMCW)radar,awidebandLFMCWradarsignalgenerationmethodbasedonDDSandfrequencymultiplicationispropo
4、sed.Onthebasisofanalyzingthefundamentalsofdirectdigitalsynthesize(DDS)andLFMCWradar,thedesignflowchartofsignalgenerationmethodispresented,andthemethodisimplementedinhardwareanditsfunctionandperformancearetested.Thetestresultsshowthatthemethodispractical,flexibleandeasilyre
5、alizedinhardware.Forthesignalgeneratedbythedesignedhardwareplatform,thefrequencytunerateandresolutionarehigh,thespurlevelislow,andthein-bandunflatnessissmall.TheproposedmethodcansatisfytherangehighresolutiondemandinLFMCWradarsystems.Keywords:DDS;widebandLFMCW;frequencymult
6、iplication**********************************************************************************************戰(zhàn)時裝備調(diào)配保障系統(tǒng)的目標(biāo)體系和運(yùn)行機(jī)制陳偉龍,陳春良,黃小龍(裝甲兵工程學(xué)院技術(shù)保障工程系,北京100072)摘要:針對目前戰(zhàn)時維修保障不能在短時間內(nèi)恢復(fù)部隊(duì)?wèi)?zhàn)斗力的問題,提出運(yùn)用系統(tǒng)工程方法論對裝備調(diào)配保障系統(tǒng)進(jìn)行研究。闡述戰(zhàn)時裝備調(diào)配保障系統(tǒng)的基本概念,明確該系統(tǒng)的組成要素,解讀其基本內(nèi)涵,構(gòu)建裝備調(diào)配保障系統(tǒng)的目標(biāo)體系;圍繞運(yùn)行
7、機(jī)制,給出該系統(tǒng)的工作流程圖,分析系統(tǒng)運(yùn)行的作用機(jī)制,可為戰(zhàn)時裝備調(diào)配保障的進(jìn)一步研究提供理論參考。關(guān)鍵詞:系統(tǒng);調(diào)配保障;目標(biāo)體系;運(yùn)行機(jī)制TargetSystemandOperatingMechanismofWartimeEquipmentDeploymentSupportSystemChenWeilong,ChenChunliang,HuangXiaolong(DepartmentofTechnicalSecurityEngineering,AcademyofArmoredForceEngineering,Beijing100072,
8、China)Abstract:Inviewoftheproblemthatthewartimemaintenancesupportcan’trestorethetroopsfig