Research On The Hand-held Integrated Device Of Communication And Command

The main background of this issue is military application requirements,Dedicated to the development of a soldier hand-held equipment,which integrated hand-held VHF radio,hand-held information terminals and BD user hand-held device three functions in one.The equipment has the VHF radio communication function,information terminal command function and BD Positioning and BD short message communication function,mainly used for short distance communication between Army Tactical units.In this paper,the main research contents include:(1)The VHF channel: Based on the traditional hand-held VHF radio,frequency range: 30~87.975 MHz,communication distance: 3~5Km.The research contents include miniaturization front-end rapid tuning technology,fractional-N frequency synthesis technology,broadband linear power amplification technology,etc.;(2)The miniaturization of dual-mode BD module: With satellite radio navigation service(RNSS)and satellite radio determination service(RDSS)dual mode function.The research contents include the RF circuit design of RNSS low noise amplifier,RNSS/RDSS frequency conversion and one line processing,the base-band circuit design of A/D sampling,signal processing and information processing,etc.;(3)The minimum digital processing platform: A digital hardware platform that supports communication waveform and command application software to run.The research contents include signal processing,master control processing,power management,and internal&external interface circuit design,etc.;(4)The software platform: Based on VxWorks operating system and WinCE operating system.The research contents include the software design of signal processing,master control processing and RF processing,etc.;(5)Research and design the principle prototype with various functions and flexible applications,and the main functions of communication radio and command terminal are realized on the principle prototype,for hand-held communication integration equipment translate into actual equipment laying foundations.