matlab仿真论文matlab图像处理论文

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matlab仿真论文matlab图像处理论文

跳频扩频系统的Matlab模拟仿真实现

摘 要:跳频扩频技术采用特定的扩频函数及载波跳变来实现频谱展

宽,具有很强的抗干扰性,并具有信息隐蔽、多址保密通信的特点SK

调制方式由基带脉冲控制载波相位。在Matlab/Simulink下建立了采

用BPSK方式的跳频扩频( FH-SS )通信系统模拟模型,并编程仿真

实现该系统,对跳频扩频通信的实现有重要意义。

关键词:跳频扩频; BPSK; Matlab; Simulink

Implementation of Matlab Simulation for Frequency-hopping SpreaDSPectrum System

WANG Xiang-hong, ZHAO Hai-tao, GUAN Xiao-dong

(Unit 95588 of PLA, Xi’an 710306, China)

Abstract: The frequency-hopping spread spectrum

technology has stronger anti-jamming ability, and the features ofinformation hiding and multipath inteRFerence communication through the givenspread-spectrum function and

hopped-frequency. The PSK modulation mode and carrier phase arecontrolled by base-band pulse.The model of frequency-hopping spread spectrumcommunication system with BPSK mode is setted instrument has a single testcondition, will be transferred to the coordination of the test phase, theinstrument according to the stand-alone trials scheduled, with the processpreparation of test solutions, equipped with professional technicians andskilled workers, to ensure safety and quality. 6. welding engineeringconstruction programme 6.1 this engineering used construction specification6.1.1 site equipment, and industrial pipeline welding engineering constructionand the acceptance specification GB 50268-97 6.1.2 oil chemical toxic, and canburning media pipeline engineering construction and the acceptancespecification SH 3501-2002 6.1.3 oil chemical low temperature steel weldingprocedures SH/T 3520-2004 6.1.4 oil chemical chrome nickel Austrian's bodysteel, and iron nickel alloy and nickel alloy pipeline welding procedures SH/T3523-1999 6.1.5 SHJ520-92 petrochemical engineering technical specification forwelding of CR-MO heat-resistant steel pipe 6.1.6 of the pressure vessel NDT4730-94 6.2 JB weld preparation 6.2.1 construction according to the materialsof the project specifications and welding methods, providing qualified weldingprocedure qualification report. 6.2.2 qualified welding procedure qualificationbased on the preparation of welding instruction, guide the welder weldingoperations. 6.2.3 where participation in site welding, must be in possession ofboiler and pressure vessel welder certificates issued by the Labor Department.6.2.4 where involved in the pipe and steel structure welding welders, welderbefore entry examinations should attend the owners, and construction should bemade within the scope and eligibility approved by the quality and technologysupervision departments and owners. 6.2.5 qualify for welding welder, weldingprocess, should be approved by welding the welding process.

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matlab仿真论文matlab图像处理论文