Journal
Scientific and Technical Journal of Information Technologies, Mechanics and Optics
UDK621.38
Issue:6 (136)
Download PDF0 Kbyte
Methods for determining the phase difference of the output signals for the receiving elements of a phased antenna array in a radiophoton circuit with parallel and series pairwise connection ...
Annotation
Obtaining accurate phase values of the output signals for the receiving elements of a phased array antenna is one of the crucial issues relating to radio-photon technologies in radar and radio communication. The paper considers measuring the phase difference of the output signals for the receiving elements of a phased array antenna using electro-optical Mach–Zehnder modulators as part of a radio-photonic device. The dependences of the output signals of the optical signal receivers and the phase difference of the output signals for the receiving elements of the phased antenna array in the radio-photonic scheme are formalized for different variants of the connection of electro-optical Mach–Zehnder modulators. The authors propose the methods for determining the phase difference of the output signals for the receiving elements of a phased array antenna based on parallel and series connection of electro-optical Mach–Zehnder modulators into radio-photonic devices. A comparative assessment of the proposed methods is carried out. It is shown that the method based on the determination of the phase difference with the parallel connection of electro-optical modulators produces 1.58 times less error than the method with the series connection. The description of the radio-photonic scheme of the phase direction finder is presented. The proposed scheme provides high accuracy in measuring the phase difference of the output signals for individual receiving elements of a phased array antenna. The results of the work can be applied by specialists in the field of advanced radar and radio communication systems.
Keywords
Постоянный URL
Articles in current issue
- A fiber optic vibration sensor based on SMF-MMF-SMF structure and a tilted fiber Bragg grating
- Aberration analysis of a wedge as a compensator element in augmented and virtual reality systems.
- Estimation of temperature detection delay in a fiber optic gyroscope sensing coil.
- The relative intensity noise of a vertical-cavity surface-emitting laser with a fiber Bragg grating external cavity
- A comparative analysis of the frequency spectra of the human eye and a cut diamond in visible light
- Vulnerabilities in the quantum key distribution system induced under a pulsed laser attack
- Proactive management of the composition and structure of the spatial monitoring system under the influence of destabilizing factors
- An algorithm of trajectory control for the movement of a mobile robot without measuring the position coordinates
- Different III-V semiconductor nanowires with quantum dots on silicon: growth by molecular-beam epitaxy and properties
- Impact of magnesium oxide concentration and yttrium-aluminum garnet stoichiometry deviation on the microstructure and optical transmission of YAG-based ceramics
- Measurements of heat capacity and thermal conductivity of β-Ga2O3 and β-(AlxGa1–x)2O3 bulk crystals grown by the Czochralski method
- An approach to the identification of the state of elements in cyber-physical systems based on principal component analysis
- Stochastic software testing for vulnerability analysis
- Research of machine learning methods in the problem of identification of blood cells
- An Enhanced Exploration and Exploitation of Modified Grey Wolf Optimizer for Fuzzy Rules Reduction in Cloud Intrusion Detection System (CIDS)
- Model of information interaction channel routing on the FANET network using fuzzy logic
- Bi-level authentication and mannequin routing for improving security features of WSN-IoT
- Spline-wavelet bent robust codes
- Social media user identity linkage by graphic content comparison
- Monte Carlo Concrete DropPath for epistemic uncertainty estimation in pollen images classification
- Random number generation with arrays of coupled quantum-dot micropillar lasers
- The method of forming and using a digital passport for an electronic product at enterprises of the instrument-making industry
- Routing in networks of autonomous underwater vehicles