Mathematical model of the location channel of the contour of the adaptation of radioacoustic atmospheric sounding systems
DOI:
https://doi.org/10.30837/rt.2024.3.218.10Keywords:
remote sensing of the atmosphere, method, algorithm, adaptation, estimation of parameters, management, model, location information channel, temperature, sounding signalAbstract
The system of radio acoustic sounding (RAS) of the atmosphere is used in the process of solving actual scientific and applied tasks to ensure flights of aircraft, weather forecasting, studying the atmosphere, etc. However, the effectiveness of the existing radio-acoustic means is insufficient and there are practical needs for developing more promising structures and algorithms that will be implemented during the construction of specific types of sounding stations. Among the existing limitations of radio acoustic sounding systems, the main one is the violation of the Bragg condition, which determines the ratio between the lengths of acoustic and electromagnetic waves.
The article considers the method of adapting RAS systems by changing the frequency of the sounding radio signal in order to fulfill the Bragg condition as the emitted acoustic pulse signal moves along the sounding path. It is shown that to increase the efficiency of the frequency adaptation method, it is necessary to use an adequate mathematical model of the information location channel, which describes the main features of the scattering of radio waves on the acoustic wave parcel, in the control circuit of the frequency of the sounding radio signal.
The mathematical model of the location channel is considered. The study of the main types of probing acoustic and electromagnetic signals was performed using scattering bodies in the spectral representation. It has been revealed that in the presence of the Bragg condition detuning, the spectrum of the radio signal scattered on the sound has an asymmetric shape, and this is the main reason for the appearance of systematic errors in the results of sound speed measurements. Eliminating the identified errors will improve the efficiency of the adaptation devices and the RAS system as a whole.
References
Bradley S. Atmosphere Acoustic Remote Sensing. Principes andApplication. CRC Press. 2007. 267 p.
Kartashov V.M., Tikhonov V.A., Oleinikov V.N. Signal processing in radio electronic systems for remote monitoring of the atmosphere. Kharkiv : KNURE, 2014. 312 p.
Карташов В.М. Моделі і методи обробки сигналів систем радіоакустичного і акустичного зондування атмосфери. Харків : ХНУРЕ, 2011. 234 с.
Lataitis R.J. Theory and Application of a radio-acoustic sounding system (RASS): NOAA Technical Memo-randum ERL WPL-230. Nat. Oceanic and Atmos. Admin. Environ, Res. Labs. Boulder, CO, 1993, 207 p.
Remtech Radio Acoustic Sounding System (RASS) for remote sensing of temperature. URL: https://remtechinc.com/wp-content/uploads/RASS3.pdf (дата звернення 14.07.2024).
Temperature Profiler RASS. URL: https://metek.de/product-group/rass/ (дата звернення 14.07.2024).
RASS for Radar Wind Profilers. URL: https://www.scintec.com/catalogs/rass-for-radar-wind-profilers/ (дата звернення 14.07.2024).
Smith P. L. Remote measurements of wind velocity by the electromagnetic-acoustic probe. 1. System analysis.1961 // Conf. proc. 5th Annu. convention on military electronics, Wash (D.C.), rep № 419. Р. 43–53.
Fetter R. V. Remote measurements of wind velocity by the electromagnetic-acoustic probe. II. Experimental system. 1961 // Conf. proc. 5th Annu. convention on military electronics, Wash (D.C.), rep № 419. Р. 54–59.
Ситнік О.В., Карташов В.М. Радіотехнічні системи : навч. посіб. Харків : Сміт, 2009. 448 с.
Chandrasekhar Sarma, T. V., Narayana Rao, D., Furumoto, J., and Tsuda, T. Development of radio acoustic sounding system (RASS) with Gadanki MST radar – first results, Ann. Geophys., 26, 2008, pp. 2531–2542. https://doi.org/10.5194/angeo-26-2531-2008
Alexander S. P., Murphy D. J., Klekociuk A. R., High resolution VHF radar measurements of tropopause structure and variability at Davis, Antarctica (69° S, 78° E). Atmos. Chem. Phys., 13, 2013. pp. 3121– 3132. doi:10.5194/acp-13-3121-2013
Бабкін С.І., Куценко В.І., Максимова Н.Г. Оцінка похибки двох методик температурного радіоакустичного зондування атмосфери. Експериментальні результати // Радіотехніка. 1988. № 84. С.98–106.
Kartashov V.M. Estimation of Signal Parameters Scattered by an Acoustic Wave Packet // Telecommunica-tions and Radio Engineering, 2004. Vol. 61, №2. Р. 125–129.
Muradyan P., Richard Coulter R. Radar Wind Profiler (RWP) and Radio Acoustic Sounding System (RASS) Instrument Handbook. March, 2020. Environmental Science Division, Argonne National Laboratory. 20 p. URL: https://www.arm.gov/publications/tech_reports/handbooks/rwp_handbook.pdf (дата звернення 14.07.2024).
Kartashov V.M. Signal Scattering Functions of Atmospheric Sounding System // Telecommunications and Radio Engineering. 2003, Vol. 59, №7-8-9. Р. 88–94.
Kartashov V., Babkin S., Kartashov A., Pershyn Y. Development of the Atmosphere Radio-Acoustic Sound-ing Method in Ukraine and in the World in the Period of 1961-2000 // 2023 IEEE 6th International Conference on In-formation and Telecommunication Technologies and Radio Electronics, UkrMiCo 2023, 13–15 November 2023, Kyiv, Ukraine. Р. 372–376. DOI: 10.1109/UkrMiCo61577.2023.10380339
Kartashov V., Oleynikov V., Koryttsev I., Sheiko S., Zubkov O., Babkin S. Processing of Wide Band Acous-tic Signals During Detection of Unmanned Aerial Vehicles // 2020 IEEE Ukrainian Microwave Week (UkrMW). Kharkiv, Ukraine, September 21 – 25, 2020. Vol. 1 on 2020 IEEE 12th International Conference on Antenna Theory and Techniques (ICATT). Р. 35–39.
Developing and Applying Optoelectronics in Machine Vision / O. Sergiyenko, J.C. Rodriguez-Quiñonez. IGI Global, 2016. 341 p.
Kartashov V.M., Tikhonov V.A., Voronin V.V. and Tymoshenko L.P. Complex model of random signal in problems of acoustic sounding of atmosphere // Telecommunications and Radio Engineering. 2016. Vol. 75, Iss. 20. Р.1885–1892.
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