|
The tactical data link in the military field has been to develop in recent years, due to the special nature of military applications, the spread spectrum radio has become a major transmission equipment of data link anti-jamming channel, related equipment and technologies for the development of amazing, and because the rapid development of helicopters in China , making the helicopter airborne ultrashort wave anti-jamming radio with high research and development value.The "anti-jamming helicopter airborne ultrashort wave radio" is a sub-project of CETC No. 10 Research Institute’s helicopter project, I am responsible for the overall development of programs and equipment. The design uses double-conversion superheterodyne architecture, spread spectrum system using direct sequence spread spectrum(DS), wideband receiver channel using a large dynamic receiver, fast automatic gain control technology, the use of broadband high-power transmitter channel amplifier, intermediate frequency processing using digital intermediate frequency technology, equipment supply and interface module, the channel module, terminal module, power amplifier module is composed of four major modules. Equipment meets requirements of project indicators. The equipment involved in the design process to the technology, with some innovative and unique.In this paper, the radio as a research focus on the overall design, mainly as analysis of the antijamming communication technology status, anti-jamming technology and theoretical basis, the radio antijamming overall technical program, major technical indicators were demonstrated, the module circuit design and implementation, finally gives the test result,analysis of the result, and the direction of further improvement of equipment.
|