FAM和SSCA算法的matlab源程序-detection and identification of signal
FAM和SSCA算法的matlab源程序-detection and identification of signalFAM和SSCA算法的matlab源程序-detection and identification of signalDISCLAIMER NOTICEMTHIS DOCUMENT IS BESTQUALITY AVAILABLE. THECOPY FURNISHED TO DTICCONTAINED A SIGNIFICANTNUMBER OF PAGES WHICH DONOT REPRODUCE LEGIBLY.ilApproved for public release; distribution is unlimitedDETECTION AND IDENTIFICATION OF CYCLOSTATIONARY SIGNALSEvandro luiz da costaLieutenant Commander, brazilian NavyB.S., Instituto Militar de Engenharia, 1980Submitted in partial fulfillmentof the requirements for the degree ofMASTER OF SCIENCE IN ELECTRICAL ENGINEERINGANDMASTER OF SCIENCE IN ENGINEERING ACOUSTICSfrom theNAVAL POSTGRADUATE SCHOOLMarch 1996Author.Evandrodk da costaapproved byRQ求Ralph Hippenstiel, Thesis Co-AdvisorRoberto Cristi, Thesis Ca-AdvisoiHerschel. Loomis, Jr, hairmanDepartment of Electrical and Computer EngineeringArthony A. Atchley / ChairmanEngineering Acoustics Academic CommitteeABSTRACTPropeller noise can be modeled as an amplitude modulated(AM) signalCyclic Spectral Analysis has been used successfully to detect the presence ofanalog and digitally modulated signals in communication systems. It can also identithe type of modulation. Programs for Signal Processing based on compiledlanguages such as FORTRAN or C are not user friendly, and MATLAB basedprograms have become the de facto language and tools for signal processingengineers worldwideThis thesis describes the implementation in mAtlab of two fast methods ofcomputing the Spectral Correlation Density(SCD)Function estimate, the FFTAccumulation Method (FAM)and the Strip Spectral Correlation Algorithm( SSCA),toperform Cyclic Analysis. Both methods are based on the Fast Fourier transformFFT)algorithm. The results are presented and areas of possible enhancement forpropeller noise detection and identification are discussedTABLE OF CONTENTSINTRODUCTIONA MOTIVATION,P,中“····*s···:···:B BACKGROUNDC THESIS GOALSIL NOISE IN THE OCEAN··+A TYPES OF UNDERWATER NOISE25561. Ambient Noise番申2. Self noise3. Radiated noise8B RADIATED NOISE FROM SHIPS, SUBMARINES AND TORPEDOES.......8C PROPELLER NOISE10lI CYCLOSTATIONARY PROCESSING15A CYCLOSTATIONARIT15B THE CYCLIC AUTOCORRELATION FUNCTION (ACF)17C THE SPECTRAL CORRELATION DENSITY FUNCTION (SCD)18N. ESTIMATION OF THE SPECTRAL CORRELATION DENSITY FUNCTION23A FFT ACCUMULATION METHOD(FAM)25B STRIP SPECTRAL CORRELATION ALGORITHM(SSCA■D28V. EXPERIMENTAL RESULTSA. ANALOG-MODULATED SIGNALS311. Amplitude Modulated(AM)Signal===2-312. Pulse-Amplitude Modulated(PAM) Signal58B DIGITAL-MODULATED SIGNALS1. Amplitude Shift Keying(ASK) Signal中中非昏号即即号自唱即自曲音非带卡.最662. Binary-Phase Shift Keying(BPSK) Signal6了VI CONCLUSIONS81A SUMMARY81B SUGGESTIONS82APPENDIX A-CALCULATION OF THE SCD FUNCTION OF AN AMPLITUDE-MODULATED SIGNAL83APPENDIX B-FUNCTION AUTOFAM95APPENDIX C-FUNCTION AUTOSSCA99APPENDIXD-FUNCTION CROSSFAM103APPENDIX E-FUNCTION CROSSSSCA109APPENDIX F-PLOTTING ROUTINES113LIST OF REFERENCES115INITIAL DISTRIBUTION LIST看音117INTRODUCTIONA. MOTIVATIONPropeller related acoustic signatures typically exhibit modulationcharacteristics. These modulation characteristics originate from the cavitationprocess that takes place in the water due to the cyclic movement of the propellerThe cavitation process is basically the collapse of air and vapor bubblesdue to variations in the static pressure. These variations in static pressure are aconsequence of the passage of the propeller blades through the water. Thismovement, cyclic in nature, causes amplitude modulation in the static pressureand as a consequence an amplitude-modulated(AM) signal can be detected in areceiverCyclostationary processing techniques have been used to detect andlentify analog and digital communication signals very successfully. Thesetechniques have the advantage of using a more realistic model for the signalthan the stationary model used in most of the more conventional signalprocessing techniquesB BACKGROUNDThe basic elements of cyclic spectral analysis are the time-variant cyclicperiodogram and the time-variant cyclic correlogram. These two functions form aFourier transform pair. This fact is known as the cyclic Wiener relation or thecyclic Wiener-Khinchin relation [Ref. 1: p. 49.1
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1553B中文手册
恩菲特公司的1553B中文手册，手册丰富，详细，是1553B开发者的优选方案成都恩菲特科長有限公司EPH31580日录恩菲特产品保修条款…安全标志符号,D香看看看。。。垂垂看导D看警告第1章芯片概述…11.简介12.EPH31580特性111.3.EPH31580描述……14.电气特性+++··+++++++.1415.功能描述.…1.6.曼彻斯特解码…171.7.吋间戳178.中断19.存储器访问和寄存器访问1.10. BUS CONTROL框架.171.11. REMOTE TERMINAL框架……11.12. BUS MONITOR框榘18第2章软件接口自●●看命·●●●看鲁●息1921.上电状态22.存储器管理23.寄存器定义…21.中断屏敞寄存器(读/写22.配置寄冇器#1(读/23.配置寄存器#2(读/写)24.开始/复位寄存器(写)2.5.BC/RT命令堆栈指针寄存器(读)….262.6.BC控制字尕RT子地址控制宇寄存器(读)…2627.时标寄存器(读/写)28.中断状态寄存器(读29.配置寄存器#3(读/写)……2.10.配置寄冇器#4(读/写)21.配置寄存器#5(读/写)2.12.数据堆栈指针寄存器(读)…322.13.BC下一条消息开始时间寄存器(读/)214.BC帧时间/RT最后一个命令字/BM触发设置寄存器(读/写)2.15.RT状态字寄存器(读)216.RIB字寄存器(读).342.17. BLOCK STATUS WORD第3章 BUS CONTROL OPERATION……38HTTP:www.enpht.comTel:028-851482738528FAX:028-85148287107第3页成都恩菲特科長有限公司EPH31580BC存储器管理…38ACTIVE AREAS DOUBLE BUFFERING38PROGRAMMING OF BC MESSAGE FRAMES39BC Memory managcmcntMessage Block Formats∴39BC控制字∴…42DESCRIPTOR STACK44C MESSAGE GAP TIMEBC FRAME AUTO REPEATMINOR AND MAJOR FRAMES甲甲···:·…46BCⅠ NTERRUPT……46OTUER FUNCTIONBC SOFTWARE INITIALIZATION SEQUENCE··47BC PSEUDO CODE EXAMPLE.49第4章 REMOTE TERMINAL OPERATION,51RT存储器结构51RT存储器管理SUBADDRESS CONTROL WORDRT STACK AND INTERRUPTSTIME TAG WORDDATA BLOCK POINTER OR MODE DATA WORD57COMMAND WORD RECEIVEDRT COMMAND ILLEGALIZATION57SELECTED MODE CODE INTERRUPT60BROADCAST OPT⊥0NBUSY BITRT ADDRESS INPUTS62RT STATUS WORDRT-TO-RT RESPONSE TIMEOUT64SUMMARY OF RESPONSES TO MODE CODE MESSAGESRT SOFTWARE INITIALIZATION PROCEDURERT PSEUDO CODE EXAMPLE.68第5章 BUS MONITOR OPERATION.71MONITUR SELECTION FUNCTIONMESSAGE MONITOR FORMATSBM存储器管理MESSAGE MONITOR BLOCK STATUS WORDBM SOFTWARE INITIALIZATION PROCEDURE,76第6章 EXTERNAL INTERFACES通垂函a看自PIN DESCRIPTIONS BY FUNCTIONAL GROUPS隔离变压器到外部系统的连接BUFFERED u TRANSPARENT MODEHTTP:w.enphtcomTEL:028-851482738528FAX:028-85148287107第4页成都恩菲特科長有限公司EPH31580外部时序接口BUFFERED模式接口时序85与几和典型器件的连接与ADSP2101的连接与68040的连接与80286的连接.环境温度封装形式…订货号附录一:变压器选型手册97HTTP:/ww.enphtcomTEL:028-85148273/8528FAX:028-85148287107第5页成都恩菲特科長有限公司EPH31580恩菲特产品保修条款产品名称:1553A/B协议芯片产品型号:EP-H31580保修期限:一年1.恩菲特公司对由恩菲特公司出售的硬件产品和附件提供质量保修,保修期限如上所示。在保修期内如果出现因质量原因而产生故障,恩菲特公司在收到关于产品故障的通知并经查验核实后,有权选择维修或整套更换产品。整套更换的产品可以是新的或接近新的2.恩菲特公司保证软件产品经过充分测试。如果恩菲特公司在保修期内收到关于软件故障的通知,将在查验核实后免费更换软件3.恩菲特公司不保证在产品修理过程中产品可不中断地使用。但恩菲特公司保证在合理的期限内修理好发生故障的产品4.产品保修期从产品发运之日或由恩菲特公司开始安装之日起开始计算。如果用户的进度安排延后使恩菲特公司在产品发运之日起30天内仍未开始安装,产品保修期从交付之日后的笫31天开始计算5.恩菲特公司对任何下列情况而导致的产品故障和损坏不提供免费保修:(a)错误的使用或不适当的维护和校正,(b)非恩菲特公司提供的软件、接口、部件或其它物品,(c)未经许可的拆卸、修改和错误使用,(a)超过产品技术规格指明的范围使用,(e)不适当的运输、搬运和存贮,(f)其它不可抗力原因造成的故障或损坏(如HTTP:ww.enphtcomTEL:028-851482738528FAX:028-85148287107第6页成都恩菲特科長有限公司EPH31580地震、战争、交通事故等)6.在法律允许的范围内,上述保修条款是唯一明确的,同时没有任何其它的保修条款,不论是书面的或口头的。恩菲特公司明确表示拒绝承认任何暗示的保修条款和商业条款7.如果用户因使用恩菲特公司产品造成对其它物品损坏或身体伤害,经法院裁定其直接原因是恩菲特公司产品缺陷,恩菲特公司对此负责。版权声明所有恩菲特公司出售的软件产品或随同硬件产品出售的软件和文件,其版杈属恩菲特公司所有,恩菲特公司保留软件产品和文件方面的所有版权。用户对产品的购买并不表示用户在版权方面的任何许未经恩菲特公司书面许可的任何复制和出售均是被禁止的成都恩菲特科拈冇限公司HTTP:www.enpht.comTel:028-851482738528FAX:028-85148287107第7页成都恩菲特科長有限公司EPH31580安全标志符号符号说明符号说明贴在产品上的标志符号表示仪器在操作前必须表示使用者必须遵循产品手保证相应的接线端接地册中相应的警告或注意内容良好,以免电击而引起以免造成人身伤害或设备损设备损坏或人身伤害。坏交流直流表示相应的操作危险。△操作员应严格按规定操高压危险。警告作,否则可能导致人身危险表示相应的操作危险操作员应严格按规定操凸⊥机外壳楼地通常与注意,否则可能寻受慢备设备的金属外壳相连接。损坏或永久性数据丢失HTTP:ww.enphtcomTEL:028-851482738528FAX:028-85148287107第8页成都恩菲特科長有限公司EPH31580敬在操作,维护及修理设备的整个过程中要严格遵守以下安全事项违反这些安全规程或任何本手册中警告和注意事项规定的操作导致的设备损坏或人身伤害,恩菲特公司不对此类事故承担责任●对第一类安全设备(具有俣护地接线端子的设各),必须在产品的主电源输入端或供电电源电缆提供一个可靠的安全地连接对于模块式设备,为确保模块安全接地,应将模块前面板上的紧固螺钉旋紧,以保证模块的紧固面板与机箱保护地可靠接通●仪器不应接触易燃易爆气体或在有易燃易爆气体的环境下操作●为了避免火灾,应使用具有相同电压和电流的保险溶丝。不能使用修理过的保险熔丝或短接保险盒●操作人员不应打开机盖。这只能由经过培训的专业技术人员进行。打开机盖是危险的,因为设备中可能存在危险电压。甚至在设备断电以后,高压也可能存在。为了避免人身伤害,应由经过培训的专业技术人员来操作。●不要操作危险设备或在危险的条件下操作设备。如果任何削弱安全性或可能导致安全保护设施失效的情况存在(包括物理损坏,潮湿或别的原因),应立即拔除电源线,直到由专业技术人员确认后方可操作●不要单独维修或调整仪器,以免发生危险时可得到帮助和救治HTTP:www.enpht.comTel:028-851482738528FAX:028-85148287107第9页成都恩菲特科長有限公司EPH31580不能更换或更改产品中的元器件,除非有明确的认可和授权。因为这将带来其它危险。如仪器出了故障,应将其送到恩菲特公司指定的维修点进行维修,从而保证仪器的各项功能文献版本吏新历史所有版本和手册更新及发行时间都列举在下面。手册的初始版本是Ver1.00。不论何时更新手册,版本号都在尾数加1。当更新涉及到较为重要的内容时,版本号中间的数加1,当更新涉及到核心内容时,版本号第一位数加1。更新的内容通过手册发行,包括修改的内容及对手册新增加的内容。新版本均包括了对旧版本更改的内容。每个新版本或更新后版夲都有一页标注该文献的更改情况Ⅴrl.0l..,,,∴,,.,2005.05HTTP:/ww.enphtcomTEL:028-85148273/8528FAX:028-85148287107第10页
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