| 摘要: |
| 提出了基于匹配滤波器线性调频压缩技术的数字侦察接收机模型。该模型克服了传
统的基于色散延迟线等模拟器件的脉冲压缩接收机精度低、受环境影响大等缺点，采用了匹
配滤波器技术使在相同输入条件下输出信噪比最大；同时解决了普通超外差体制全景显示搜
索接收机搜索速度、频率分辨率和灵敏度之间的矛盾。实现了中频滤波器和压缩滤波器的设
计。仿真结果表明，基于数字化压缩技术的侦察接收机在侦察频段内高速搜索时保持了
很高的信号接收灵敏度和频率分辨率，性能稳定，能有效检测到跳频信号。 |
| 关键词: 跳频信号检测 全景接收机 脉冲压缩技术 频率分辨率 |
| DOI： |
|
| 基金项目:国家高技术研究发展计划（863计划）项目（2009AAJ208）；中
国博士后科学基金资助项目（200902671） |
|
| Simulation and Analysis of Application of Pulse compression Technique in Digital Reconnaissance Receiver |
| WANG Qi-feng,XIE Feng,HUANG Gao-ming |
| (College of Electronics Engineering,Naval University of Engineering,Wuhan 43
0033,China) |
| Abstract: |
| Digital reconnaissance receiver model based on pulsecompression techno
logy and matched filter is proposed, in which performance instability of anal
og pulsecompression receiver is wiped off. Matched filter is used in the model
and max SNR is obtained at the same SNR of input. Contradiction between scout ve
locit
y of frequency,resolution of frequency and sensitivity is solved in digital
reconnaissance receiver of pulsecompression. Intermediate frequency(IF) filte
r and compression filter are designed. Conclusion of simulation indicates that t
he resolution of frequency and sensitivity are kept up when the scout frequency
of high speed is being progressed,stabilization of performance is excellent,and
FH signal can be detected effectively. |
| Key words: FH signal detection full band receiver pulse compres
sion technology frequency resolution |
《电讯技术》编辑部 