摘要
为了解决双频连续波雷达在测距中的整周期模糊度问题,同时实现雷达通信一体化,该文提出一种基于双载频双路扩展的二元相移键控(EBPSK)调制解调器的综合电子系统,实现了基本的雷达与通信功能,其中一路只发送连续波,与另一路EBPSK调制信号进行比相接收,输出高精度测距信息;用冲激滤波器对另一路EBPSK调制信号进行解调。通过把EBPSK调制信号的相位跳变信息转变为幅度冲激,在连续波背景中再现目标的雷达脉冲回波,该滤波器的输出是大量程测距信息;将两组数据融合后,系统可输出高精度大量程的雷达测距值。同时利用EBPSK调制信号和冲击滤波辅助解调的特殊优势进行高频谱利用率的数字通信。
For a dual-frequency Continuous Wave（CW） radar, ambiguity may occur in ranging measurement. In order to solve this problem and integrate radar and communication system, a new dual-frequency electronic system based on Extended Binary Phase Shift Keying（EBPSK）-MODEM is put forward. The system is mainly composed of two EBPSK-MODEM with different carriers, where modulator 1 transmits CW, while modulator 2 transmits EBPSK signals, but two echo signals are compared in a phase discriminator. The high-precision ranging value can be obtained. The other received EBPSK signals are also demodulated by using an impacting filer, which can convert the phase hopping into amplitude shock as the echo of pulse radar. Pulse radar echo signal can be dectected in CW background, and the output of impacting filer is wide-range measured value. After data fusion of two channel measuring, the system would output a radar measurement with both high-precision and wide-range. The radar system can also be used as a spectra efficient digital communication system by utilizing the advance of EBPSK modulator and the impacting filter aided demodulator.
出处
《电子与信息学报》
EI
CSCD
北大核心
2014年第8期1786-1791,共6页
Journal of Electronics & Information Technology
基金
国家自然科学基金(61571204)资助课题
关键词
雷达通信一体化
EBPSK调制
冲击滤波
整周期模糊度
双频连续波
Integration of radar and communication
Extended Binary Phase Shift Keying（EBPSK） modulation
Impacting filer
Range ambiguity
Dual-frequency Continuous Wave（CW）
