现代通信对抗系统中的直接变频技术

Direct Conversion Technology for Modern Communication Countermeasures System

干扰频谱带宽是衡量现代通信对抗系统性能的一项关键指标。采用直接变频技术，有效拓宽现代通信对抗系统干扰机的瞬时干扰带宽至300MHz，同时灵活产生多个目标干扰信号，有助于提升系统综合对抗能力，也为今后可重构硬件平台的建立打下坚实基础。

The spectrum bandwidth of jamming signals is a key technical specifcation for the evaluation of performance of modern communication countermeasures system. Using direct conversion technology, the instantaneous jamming bandwidth of the jammer included in the modern communication countermeasures system can be extended effectively to 300MHz and mukiple target jamming signals can be simultaneously generated to enhance the integrated jamming capabihty of the system, thereby founding the solid basis for the reconfigurable hardware platform.