Radiophotonic module for angle of arrival estimation of a reflected signal for radar type problems solving

Oleg G. Morozov; Alexander A. Ivanov; Airat Zh. Sakhabutdinov; Pavel E. Denisenko; Gennadiy A. Morozov; Evgeny P. Denisenko; Alexandra A. Lustina; Vladimir D. Andreev

doi:10.1117/12.2629381

25 July 2022 Radiophotonic module for angle of arrival estimation of a reflected signal for radar type problems solving

Oleg G. Morozov, Alexander A. Ivanov, Airat Zh. Sakhabutdinov, Pavel E. Denisenko, Gennadiy A. Morozov, Evgeny P. Denisenko, Alexandra A. Lustina, Vladimir D. Andreev

Author Affiliations +

Proceedings Volume 12295, Optical Technologies for Telecommunications 2021; 1229506 (2022) https://doi.org/10.1117/12.2629381
Event: Nineteenth International Scientific and Technical Conference "Optical Technologies for Communications", 2021, Samara, Russian Federation

Abstract

This article describes a new approach for the estimation of the direction or of the microwave signal reflected from the object, based on radio photonics technologies. The angle of arrival measurement device has the same structure as the classical fiber-optic communication channel and consists of a laser, a block of electro-optical modulators 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 parallel subunits, consisting of tandem single-port amplitude and phase modulators (TAPM). A microwave signal reflected from the object with a time delay, the value of which is determined by the AOA, is sequentially received at the radio frequency inputs of two TAPMs through the receiving antennas connected to them. In this case, the initial components of the laser carrier at the output of the TAPM subunits of both channels are completely suppressed, which significantly distinguishes the proposed solution from the known ones for the better in terms of increasing the measurement accuracy. The beats of the output signals of the TAPMs at the output of the photodetector represent a signal reflected from the object, according to the power of which the AOA can be determined.

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Oleg G. Morozov, Alexander A. Ivanov, Airat Zh. Sakhabutdinov, Pavel E. Denisenko, Gennadiy A. Morozov, Evgeny P. Denisenko, Alexandra A. Lustina, and Vladimir D. Andreev "Radiophotonic module for angle of arrival estimation of a reflected signal for radar type problems solving", Proc. SPIE 12295, Optical Technologies for Telecommunications 2021, 1229506 (25 July 2022); https://doi.org/10.1117/12.2629381

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KEYWORDS

Modulators

Microwave radiation

Radar

Signal processing

Electrooptic modulators

Modulation

Photonics

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