辐射光子模块用于多普勒频移测量的一种反射信号,用于雷达型问题的解决

O. Morozov, A. Ivanov, A. Sakhabutdinov, P. E. Denisenko, G. A. Morozov, Evgeny P. Denisenko, A. A. Lustina, V. D. Andreev
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引用次数: 1

摘要

本文介绍了一种基于射电光子学技术对运动物体反射的雷达微波信号进行多普勒频移测量的新方法。DFS测量装置具有与带滤波的顺序辐射光子链路相同的结构,由激光器、电光调制器块、光纤布拉格光栅(FBG)和光电探测器组成。与基于双端口Mach-Zehnder调制器的已知解决方案相反,电光调制器块基于两个子单元,由连接的串联单端口振幅和相位调制器(TAPM)组成。TAPM子单元的一般结构是平行序列的。物体反射的微波信号到达第一个TAPM,形成测量通道。串联的第二个和第三个tapm形成一个与测量通道并联的参考通道。第二TAPM以探测微波频率接收来自定位发射机的参考信号,之后,以探测频率的两倍为间隔的双频辐射被馈送到第三TAPM,第三TAPM从双频辐射的每个分量再产生两个,其差频等于最大可能DFS的两倍。光电探测器输出的测量通道和参考通道信号的节拍是三个高频(千兆赫)或低频(兆赫)电信号,其频率和功率用于DFS测定。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Radiophotonic module for Doppler frequency shift measurement of a reflected signal for radar type problems solving
This article describes a new method for the Doppler frequency shift (DFS) measurement of a radar microwave signal reflected from a moving object, based on radio photonics technologies. The DFS measurement device has the same structure as the sequential radiophotonic link with filtration and consists of a laser, a block of electro-optical modulators, a fiber Bragg grating (FBG), and a photodetector. The block of electro-optical modulators, in contrast to the known solutions based on a two-port Mach-Zehnder amplitude modulator, is based on two subunits, consisting of connected tandem single-port amplitude and phase modulators (TAPM). The general structure of the TAPM subunits is parallelserial. The microwave signal reflected from the object arrives at the first TAPM, which forms the measurement channel. The second and third TAPMs, connected in series, form a reference channel connected in parallel to the measurement one. The second TAPM receives a reference signal from the locator transmitter at the probing microwave frequency, after which the two-frequency radiation, spaced by twice of the probing frequency, is fed to the third TAPM, which generates from each component of the two-frequency radiation two more with a difference frequency equal to twice the maximum possible DFS. The beats of signals from the measurement and reference channels at the output of the photodetector are three high-frequency (GHz) or low-frequency (MHz) electrical signals, the frequencies and powers of which used for the DFS determination.
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