Subsampling in Reducing Leakage Signal Effect

Authors: Kichigin A.A., Yurenev A.V.  Published: 09.02.2018
Published in issue: #1(118)/2018  
DOI: 10.18698/0236-3933-2018-1-21-30

Category: Instrument Engineering, Metrology, Information-Measuring Instruments and Systems | Chapter: Telecommunication Systems, Networks and Devices  
Keywords: linear frequency modulation, transmit-receive module, mathematical simulation, antenna cross talk, analog-to-digital conversion, Doppler frequency shift, radio engineering

The research deals with the short range radiolocation system using a LFM signal. The paper describes the structure of the input signal of resultant difference. Within the research we developed a signal processing algorithm that reduces the leakage signal effect in a small-sizetransmit-receive module. The algorithm is based on subsampling of the input signal by means of ADC. As a result, we formulated requirements for the system and ADC for this algorithm to be implemented. Finally, we checked the algorithm functionality and showed its possible upgrading options to improve noise characteristics of the system


[1] [1] Gorbatov K. Radar modules of RFBeam company for ISM 24.05–24.25 GHz band. Komponenty i tekhnologii [Components & Technologies], 2015, no. 4, pp. 18–22 (in Russ.).

[2] [2] Gorbatov K. On construction of long-range movement sensor based on K-LC6 24 GHz module of RFbeam coompany. Komponenty i tekhnologii [Components & Technologies], 2016, no. 7, pp. 34–36 (in Russ.).

[3] Klimashev B.M., Petrov I.P. Ustroystva blizhney lokatsii s nepreryvnymi signalami [Short-range location devices with continuous signals]. Kuybyshev, Kuybyshevskiy politekhnicheskiy institut im. V.V. Kuybysheva Publ., 1974. 51 p.

[4] Kichigin A.A., Shakhtarin B.I. Signal processing algorithm in autonomous system of altitude fixation. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Priborostr. [Herald of the Bauman Moscow State Tech. Univ., Instrum. Eng.], 2016, no. 3, pp. 13–23 (in Russ.). DOI: 10.18698/0236-3933-2016-3-13-23

[5] Atayants B.A., Ezerskiy V.V., Smolskiy S.M., Shakhtarin B.I. Noise and transmitter modulation curve non-linearity in the precision industrial short-range FM radar. Uspekhi sovremennoy radioelektroniki [Achievements of Modern Radioelectronics], 2008, no. 3, pp. 3–29 (in Russ.).

[6] Koziratskiy Yu.L., Ivantsov A.V., Tolstykh N.N., Kildyushevskiy V.M. Define nonlinearity of an amplitude-frequency characteristic of the converter at accuracy of an estimation of parameters of the LFM-signals in imitating jamming formation devices. Radiotekhnika [Journal Radio-engineering], 2010, no. 10, pp. 37–40 (in Russ.).

[7] Rozhdestvenskii D.V. Sampling and the discretization theorem. Automation and Remote Control, 2006, vol. 67, iss. 12, pp. 1991–2001. DOI: 10.1134/S0005117906120113

[8] Mikushin A.V., Sazhnev A.M., Sedinin V.I. Tsifrovye ustroystva i mikroprotsessory [Digital devices and microprocessors]. Saint Petersburg, BKhV-Peterburg Publ., 2010. 832 p.

[9] Kazaryan S.M., Pavlov G.L. Model of receiver of GNSS Navstar in program SystemVue. Nelineynyy mir [Nonlinear World], 2011, vol. 9, no. 12, pp. 807–812 (in Russ.).

[10] Shakhtarin B.I., Sidorkina Yu.A., Kulkov I.A. Simulation of hybrid system phase and clock synchronization PM-signals. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Priborostr. [Herald of the Bauman Moscow State Tech. Univ., Instrum. Eng.], 2014, no. 4, pp. 123–134 (in Russ.).

[11] Glazkov V.V., Likhoedenko K.P., Suchkov V.B. Kinematics multipoint model at the motorized objects formation methodology on the basis of their polygonal models. Nauchnyy vestnik MGTU GA [Civil Aviation High Technologies], 2012, no. 176, pp. 57–64 (in Russ.).

[12] Glazkov V.V., Likhoedenko K.P., Suchkov V.B. Digital modelling of input signals of Doppler radar systems of a millimetric wave range from motorized objects. Elektromagnitnye volny i elektronnye sistemy [Journal Electromagnetic Waves and Electronic Systems], 2011, no. 6, pp. 43–51 (in Russ.).