Hristo Kabaktchiev

Hristo Kabaktchiev

Professor
DSc

Software Technologies

Email: 
ckabakchiev@fmi.uni-sofia.bg
Phone: 
+359 2 979-2928
Room: 
Bulding 2, Room 301
Office hours: 

Friday 10:00-12:00, rom. 302, 2 bl. 4 km.

Recent publications

 

Ø  conferences and symposiums for the last five years:   2015-2019
1.      Garvanov I., Garvanova M., Kabakchiev C., (2018), “Pulsar Signal Detection and Recognition”, Eighth International Conference on Telecommunications and Remote Sensing (ICTRS 2019), Rhodes, Greece, 16-17 Sept., 2019, ACM ISBN 978-1-4503-7669-3/19/09, ISBN: 978-145036580-2, DOI: 10.1145/3357767.3357771, pp.30-34. (Scopus, Web of Science).
2.      Garvanova M., Garvanov I., Kabakchiev C., Shishkov B., “Measuring and Clustering Moving Objects”, Eighth International Conference on Telecommunications and Remote Sensing (ICTRS 2019), Rhodes, Greece, 16-17 Sept., 2019, ACM ISBN 978-1-4503-7669-3/19/09, ISBN: 978-145036580-2, DOI: 10.1145/3357767.3357776, pp.66-70. (Scopus, Web of Science).
3.      Kabakchiev H., V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, P. Daskalov, H. Rohling, M. Bentum, J. Fernandes, “Feasibility of Cosmic Object Detection Using a Solar FSR System”, Proc of the Signal Processing Symposium SPS-2019, Jachranka, Poland, 2019. (Scopus, Web of Science, IEEE).
4.      Kabakchiev H., V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes, “Feasibility of Cosmic Object Detection Using an X-ray FSR System”, The International Radar Symposium IRS 2019, June 26-28, 2019, Ulm, Germany, ISSN: 21555753, ISBN: 978-3-7369-9860-5, DOI: 10.23919/IRS.2019.8768195 pp. 1-8. (Scopus, Web of Science, IEEE). SJR:0.285
5.      Garvanov I., Chr. Kabakchiev, B. Shishkov, M. Garvanova, “Towards Resilience in the Provisioning of IT Services for IoT Applications, Context-Aware Road Traffic Navigation in Smart Cities”, 8 th International Symposium on Business Modeling & Software Design – BMSD’18, Vienna, Austria. 
6.      Kabakchiev C., I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H. Rohling, K. Kulpa, A. Yarovoy, Separation of GPS Signals in FSR System, The 8th Microwave and Radar Week - MRW 2018, May 14-17, Poznań, Poland, pp.248-252.
7.      Kabakchiev H., V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes, “Separation of Pulsar Signals in FSR System”, International Radar Symposium 2018, 28-30 June, 2018, Bonn, Germany.
8.      Kabakchiev H., V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes, “Comparison of Two Algorithms for Signal Detection in Pulsar-based FSR”, International Radar Symposium 2018, 28-30 June, 2018, Bonn, Germany, pp.1-9;
9.      Kabakchiev C., I. Garvanov, V. Behar, A. Kabakchiev, D. Kabakchieva, H. Rohling, K. Kulpa, A. Yarovoy, “Comparative Analysis of Two GPS Forward Scattering Systems For Cars Parameter Estimation”, International Radar Symposium 2018, 28-30 June, 2018, Bonn, Germany.
10.   Kabakchiev H., V. Behar, I. Garvanov, D. Kabakchieva, K. Kabakchiev, H. Rohling, K. Kulpa, A. Yarovoy, “Observation of Falling Cosmic Objects Using GPS-Based FSR”, International Radar Symposium 2018, 28-30 June, 2018, Bonn, Germany.
11.   Lazarov A., Chr. Kabakchiev, Ch. Minchev, I. Garvanov, „Passive Aperture Synthesis Using Pulsar’s Emissions”, International Radar Symposium 2018, 28-30 June, 2017, Bonn, Germany.
12.   C., V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M.Bentum, J. Fernandes, „Feasibility of asteroid detection using pulsar signals”, International conference on radar system, 23 – 26 October 2017, Belfast Waterfront Conference Centre, UK.
13.   C. Kabakchiev, V. Behar , I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes,  “Feasibility of Air Target Detection using Pulsar FSR Net ”, European Microwave Week 2017, (EuMW 2017), 8-13. 10.2017. Nuremberg.
14.   Kabakchiev, V. Behar , I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes, “Air Target Detection using Pulsar FSR”, International Radar Symposium 2017, 28-30 June, 2017, Prague, Czech Republic.
15.   C. Kabakchiev, V. Behar , I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M. Bentum, J. Fernandes, ”Improvement in SNR of Signal Detection using Filtering in Pulsar-Based Navigation Systems”,  International Radar Symposium 2017, 28-30 June, 2017, Prague, Czech Republic.
16.   Kabakchiev C., I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H. Rohling, K. Kulpa, A. Jarovoy, “Detection and Parameter Estimation of Vehicles by Forward Scattering GPS Radio Shadow”, International Radar Symposium 2017, 28-30 June, 2017, Prague, Czech Republic.
17.   Kabakchiev C., D. Kabakchieva, I. Garvanov, V. Behar, K. Kabakchiev, H. Rohling, K. Kulpa, A. Yarovoy, “Data Mining Classification of Vehicles Based on the Estimated Parameters of GPS Radio Shadows Detected by Forward Scattering System”, International Radar Symposium 2017, 28-30 June, 2017, Prague, Czech Republic.
18.   A. Lazarov, C. Kabakchiev, A. Dimitrov, D. Minchev ”Kalman Tracking Filter in 3-D Space”, International Radar Symposium 2017, 28-30 June, 2017, Prague, Czech Republic.
19.   Kabakchiev C., I. Garvanov, V. Behar, K. Dimitrov, “Comperativ analiz of GPS and audio shadow obtained in FS systems“, Signal Processing Symposium 2017, DĘBE, POLAND 12 – 14.09.2017.
20.   Kabakchiev C., V. Behar, I. Garvanov, D. Kabakchieva, A. Kabakchiev, H. Rohling, M.Bentum, J. Fernandes, “Feasibility of Asteroid  Detection using Pulsar FSR-Network”, Signal Processing Symposium 2017, DĘBE, POLAND 12 – 14.09.2017
21.   Garvanov I., C. Kabakchiev, V. Behar, P. Daskalov, Air target detection with a GPS forward-scattering radar, XVIII-th International Symposium on Electrical Apparatus and Technologies SIELA 2016, 29 May - 1 June 2016, Bourgas, Bulgaria.
22.   Kabakchiev C., I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H. Rohling. K. Kulpa. A. Yarovoy, “Experimental Verification of Target Shadow Parameter Estimation in GPS FSR”, Proc. of the International Radar Symposium IRS-2016, may 10 - 12, 2016, Krakow, Poland, 2016.
23.   Kabakchiev C., I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H. Rohling, K. Kulpa, A. Yarovoy, “Signal Processing of GPS Radio Shadows Formed by Moving Targets”, Proc. of the Signal Processing Symposium SPS-2015, 10-12 June, Debe, Poland, 2015.
24.   Kabakchiev C., V. Behar, P. Buist, I. Garvanov, D. Kabakchieva, M. Bentum, “Time of Arrival Estimation in Pulsar Based Navigation Systems”, Proc. of the Signal Processing Symposium SPS-2015, 10-12 June, Debe, Poland, 2015.
25.    Kabakchiev C., I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H.Rohling, K. Kulpa, A. Yarovoy, “The Study of Target Shadows Using Passive FSR Systems”, Proc. of the International Radar Symposium IRS-2015, June 24 - 26, 2015, Dresden, Germany, pp. 628-631, ISBN: 978-3-95404-853-3, 2015.
26.   Kabakchiev A., C. Kabakchiev, V. Behar, I. Garvanov, D. Kabakchieva, “Joint CFAR Detection and Parameter Estimation of Different Marine Targets using Forward Scatter Radar”, Proc. of the International Radar Symposium IRS-2015, June 24 - 26, 2015, Dresden, Germany, pp. 640-645, ISBN: 978-3-95404-853-3, 2015.
27.   Kabakchiev C., V. Behar, P. Buist, R. Heusdens, I. Garvanov, D. Kabakchieva, “Detection and Estimation of Pulsar Signals for Navigation”, Proc. of the International Radar Symposium IRS-2015, June 24 - 26, 2015, Dresden, Germany, pp. 688-693, ISBN: 978-3-95404-853-3, 2015.
28.   Kabakchiev C., I. Garvanov, V. Behar, D. Kabakchieva, K. Kabakchiev, H. Rohling. K. Kulpa. A. Yarovoy, “Detection and Classification of Objects from Their Radio Shadows of GPS Signals”, Proc. of the International Radar Symposium IRS-2015, June 24 - 26, 2015, Dresden, Germany, pp. 906-911, ISBN: 978-3-95404-853-3, 2015.
29.   Garvanov, I., Kabakchiev, Ch., Behar, V., Garvanova, M. (2015). Target detection using a GPS Forward-Scattering Radar. Book of abstracts. The Second International Conference “Engineering & Telecommunications – En&T 2015”, Noevember 18-19, Moscow-Dolgoprudny, Russia, 2015 ISBN 978-5-7417-0581-0, pp. 83-97.
30.   Garvanov, I., Kabakchiev, Ch., Behar, V., Garvanova, M. (2015). Target detection using a GPS Forward-Scattering Radar. IEEE Pros. of the Second International Conference “Engineering & Telecommunications – En&T 2015”, Noevember 18-19, Moscow-Dolgoprudny, Russia, 2015, DOI: 10.1109/EnT.2015.20, pp. 29-33, (Invited paper).
31.   Kabakchiev C., I. Garvanov, V. Behar, D. Kabakchieva, “The Experimental Study of Moving Targets Radio Shadows using GPS Signals”, The Sixth International Conference on Sensor Device Technologies and Applications SENSORDEVICES 2015, August 23 - 28, 2015, Venice, Italy, ISSN: 2308-3514, ISBN: 978-1-61208-426-8, pp. 138-141, 2015.

Education

EDUCATION

  • 1986. D.Sc. degree in Detection Radar Signal in ECM, received from the Institute of Defense Electronics “Electron”, Sofia, Bulgaria. Topic: “Methods and algorithms for detection of radar signals with the different information for parameters a priori information on the statistical characteristics of the signal and the interference”

  • 1970 and 1975 MS degree and Ph.D. degree in Radio Engineering from Air Force Engineering Academy ” Jukovski”, Moscow, Russia. Topic: "The study of optimal and suboptimal analog and discrete algorithms for detection pulse radar signals on the background of correlated interference ".

EMPLOYMENT:

  • Since 2014 – Extended Staff:  Professor, Software Technology Department, Faculty of Mathematics and Informatics, Sofia University “St. Kliment Ohridski”.

  • Since 2005 – 2014 Professor, Software Technology Department, Faculty of Mathematics and Informatics, Sofia University “St. Kliment Ohridski”.

  • Since 1996 – Visitor Professor, Technical University, Sofia.

  • Since 1995 - Professor, Head of Research Group, “Radar signal Processing” , “Information Processing and Systems” Department, Institute of Information Technologies, Bulgarian Academy of Sciences, Sofia, Bulgaria:

  • 1989-1994 - Associate Professor, Vice Head and Head of “Signal” Laboratory at the Center of Informatics and Computer Technology, Sofia, Bulgaria, Bulgarian Academy of Sciences;

  • 1977-1989 - Assistant Researcher, Associate Professor and Head of laboratory, Institute of Defense Electronics “Electron”, Sofia, Bulgaria.

MEMBERSHIP:

  • Since 2005 - Scientific Commission “Military and Military Engineering Science”, the Highest Certification Commission to the Bulgarian Government.

  • Since 2005 - Scientific Council to the Highest Certification Commission to the Bulgarian Government, “Radio electronics and communication technique”, “Information Sciences”.

  • Since 1995 - Scientific Council to the Highest Certification Commission to the Bulgarian Government, “Automatic System Control and Information in the Military Field”.

  • 1991-1993 and 1995-1997 - Scientific Commission “Electrical and Control engineering”, the Highest Certification Commission to the Bulgarian Government;

  • 1995-1997 head of Scientific Commission of Informatics at the National “Science Research” Fund to the Ministry of Education and Science.

  • 1992-1997 - member and head of the Scientific Commission of the National “Youth Science” Fund to the Ministry of Education and Science.

  • 1995 - 1998 - Scientific Councils to the Highest Certification Commission to the Bulgarian Government, on “Radio electronics and communication technique”, “Military Engineering Science “, “Military Sciences”

Scientific Interests

  • CFAR Techniques for Signal Detection in Pulse Jamming

  • Track Detection with Hough Transform

  • Pulsar and GPS Signal Detection and Estimation

  • Forward Scattering Radar Detection, Estimation and Classification of the Targets

  • Passive Bistatic Radar Forward Scattering Approach using Illumination from Natural and Artificial Space Emitters

Projects

  • 2016-2020 г.  Grant DN 07/1/14.12.2016, Investigation of parameters, properties and phenomena of radio signals from pulsars and their interaction with objects, National Science Fund, Ministry of Education and Science and University of library studies and information technologies (ULSIT) and Sofia University (SU), Bulgaria, project leader for SU.

  • 2014 -2018г, Grant DFNI-Т 02/3/12.12.2014, Detection and classification of objects in urban conditions of their radio shadow from GPS signals, National Science Fund, Ministry of Education and Science and  Sofia University (SU) and University of library studies and information technologies (ULSIT), Bulgaria, project leader.

  • 2013-2015, PulsarPlane, Programed "TRANSPORT (INCLUDING AERONAUTICS)"-Call ID "FP7-AAT-2012-RTD-L0, several University and Sofia University (SU), project leader for SU.

  • 2010 - 2014г., Grant № DVU_10_0243 2010, Development of software system for research and design of radio networks based on radio techniques to distribute signals "forward" for observation moving objects against a background of sea and electronic interference to protect marine areas and boundaries, National Science Fund, Ministry of Education and Science end Sofia University, Bulgaria, project leader.

  • 2009 – 2013, Grant DTK 02/28/2009г, Detection, evaluation of the parameters of weak GPS signals and improving system efficiency by suppressing radio frequency interference and reduce the navigational error, National Science Fund, Ministry of Education and Science end Bulgarian Academy of Science, Bulgaria, participant.

  • 2008-2011, SISTER, Strengthening the IST Research Capacity of Sofia University, FP7, Sofia University, Bulgaria, participant.

  • 2008-2010, HIPEAC, European Network of Excellence HiPEAC cluster 1186 – TU Delft, Holland, FP7, participant.

  • 2003-2006: Grant ТН-1305/2003, "Detection of signals reflected from moving targets in the presence of interference in communication networks", National Science Fund, Ministry of Education and Science end Bulgarian Academy of Science, Bulgaria, project leader.

  • 2000-2004: Grant I-902/99, "Constant False Alarm Rate Processors", National Science Fund, Ministry of Education and Science, Bulgarian Academy of Science, Bulgaria, project leader.

  • 1998-2000: Grant MU-807/98, "Hough Detectors of moving target", National Science Fund, Ministry of Education and Science and Bulgarian Academy of Science, Bulgaria, participant.

  • 1995-1998: Grant No.I-503/95 Parallel algorithms for real-time signal and image processing, National Fund for Scientific Research, Ministry of Education and Science (project leader).

  • 1993-1995: Grant No.I-304/93 Parallel methods, algorithms and architectures for signal and image processing: Design & Analysis, National Fund for Scientific Research, Ministry of Education and Science.

Teaching

  • Since 2005 – 2020, Professor, Information Technologies Department, Software Technology Department, Faculty of Mathematics and Informatics, Sofia University “St Kliment Ohridski” – „ Advanced Communication” for batchelors and for magister program "Security for the Computer and Networks", courses “Network and System Administration”, “Control of Information Security”, “Mobile Communication”.

  • Since 1996 – 2010, Visitor Professor, Air Traffic Control Department, Technical University, Sofia - “Radar Signal Processing for Air Traffic Control” Course.

 

    Publications

    Ø  book
    1.      Kabakchiev, Ch. “Methods and algorithms for radar detection of signals with the different information for parameters in a priori indefinite environment”, pp. 2-215, Radar Data Automated Processing, book 6, Nexys EOOD, (ISBN 954-8002-07-8), Sofia, 1992.  (on Bulgarian)
     
    Ø  chapter of the books
    2.      Behar V., C. Kabakchiev, I. Garvanov, H. Rohling, “Performance Analysis of Adaptive GPS Signal Detection in Urban Interference Environment using the Monte Carlo Approach”, Chapter 30, “Applications of Monte Carlo Method in Science and Engineering”, INTECH, (ISBN 978-953-307-691-1), pp. 735-756, 2011.
    3.      Ch. Kabakchiev, H. Rohling, I. Garvanov, Behar V., V. Kyovtorov, "Multisensor Detection in Randomly Arriving Impulse Interference using the Hough Transform", pp.179- 204, INTECH, "Radar Technology", (ISBN 978-953-307-029-2), 2009,
    4.       Kabakchiev Chr., V. Behar, B. Vassileva, D. Angelova, K. Aleksiev, V. Kyovtorov, I. Garvanov, L. Doukovska, Pl. Daskalov - UXO Signal Multi Sensor Detection and Estimation, pp.141-164, Springer, Book Series “NATO Science for Peace and Security Series”, Subseries “NATO Science for Peace and Security”, Series B: Physics and Biophysics, James Byrnes (Ed.), Approx. 330 p., Hardcover, (ISBN: 978-1-4020-9251-0), 2008, Proceedings of the NATO Advanced Study Institute on Unexploded Ordnance Detection and Mitigation, Il Ciocco, Italy, 2008.
    5.      Kabakchiev, Ch., V. Kyovtorov, I. Garvanov, “Secondary Application Wireless Technologies Increasing the Information Potential for Defence Against Terrorism”, pp.236-243, Springer, Book Series “NATO Science for Peace and Security Series”, Subseries “NATO Science for Peace and Security”, Series B: Physics and Biophysics, Proceedings of the NATO Advanced Study Institute 2005, Bulgaria, Albena, 16-27 May 2005, 
     
    Ø  Papers in magazines
    6.      Garvanov I., H. Kabakchiev, V. Behar, M. Garvanova, R. Iyinbor, On the Modeling of Innovative Navigation Systems, In: Shishkov B. (eds) Business Modelling and Software Design. BMSD 2019. Lecture Notes in Business Information Processing, vol 356. Springer, Cham, pp. 299-306, 2019. ISSN: 18651348, ISBN: 978-3-030-24853-6, DOI: 10.1007/978-3-030-24854-3_23, (Scopus). Q3, SJR:0.24.
    7.      Kabakchiev C., V. Behar, I. Garvanov, D. Kabakchieva, L. Daniel, K. Kabakchiev, M. Gashinova, M. Cherniakov, “Experimental verification of maritime target parameter evaluation in FSR”, IET Radar, Sonar & Navigation, ISSN: 1751-8784, E-ISSN: 1751-8792, DOI:  10.1049/iet-rsn.2014.0010, Volume 9, Issue 4, 1 April 2015, Pages 355-363, IF=1.135.
    8.      Kabakchiev C., I. Garvanov, M. Cherniakov, M. Gashinova, A. Kabakchiev, V. Kiovtorov, M. Vladimirova, P. Daskalov, “CFAR BI Detector for Mariner Targets in Time Domain for Bistatic Forward Scattering Radar”, Proceedings of SPIE, 0277-786X, v. 8008, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2011, ISSN 0277-786X, ISBN 9780819485823, pp. 8008 1U, 2011.
    9.      Garvanov I., Chr. Kabakchiev, „Adaptive Binary Integration CFAR Processing for Secondary Surveillance”, Cybernetics and Information Technologies, (ISSN 1311-9702), Volume 9, № 1, pp. 46-54, 2009.
    10.   Garvanov I., L. Doukovska, V. Kyovtorov, Chr. Kabakchiev, “Comparative Analysis of CFAR Structures for GPS Signals in Conditions of Intensive Urban Pulse Interference”, Problems of Engineering Cybernetics and Robotics, (ISSN 0204-9848), vol. 60, pp.34-41, 2009.
    11.   Shishkov B., A. Bekiarski, Hr. Kabakchiev, “Spatial and temporal processing of cyclostationary signals in array antennas based on cyclic higher-order statistics”, Comptes Rendus de l’Academie Bulgare des Sciences, vol. 61, №2, 2008. (IF 0.2).
    12.   Garvanov, I., Ch. Kabakchiev, “Radar Detection and Track in Presence of Impulse Interference by using the Polar Hough Transform”, Proc. of the European Microwave Association, Vol. 3, March 2007, pp. 170-175,2007.
    13.   Garvanov, I., Chr. Kabakchiev, H. Rohling, “Detection Acceleration in Hough Parameter Space by K-stage Detector”, Proc. of Conference "Numerical Methods and Applications - NMA06, Borovets, Bulgaria, Springer Verlag Berlin Heidelberg, Lecture Notes in Computer Science, LNCS 4310, 30.01.2007, pp 558-565. .(IF 0)
    14.   Behar V., L. Doukovska, Chr. Kabakchiev, “Target Detection and Estimation using the Hough Transform”, Proc. of Conference "Numerical Methods and Applications - NMA06, Borovets, Bulgaria, Springer Verlag Berlin Heidelberg, Lecture Notes in Computer Science, LNCS 4310, 30.01.2007, pp 558-565. (IF 0). 
    15.   Garvanov, I., Chr. Kabakchiev, “Sensitivity of Track Before Detect Multiradar System Toward the Error Measurements of Target Parameters”, Cybernetics and Information Technologies, Volume 7, № 2, pp. pp. 85-93, 2007.
    16.   Kabakchiev Chr., L. Doukovska, I. Garvanov, “Cell Averaging Constant False Alarm Rate Detector with Hough Transform in Randomly Arriving Impulse Interference”, Cybernetics and Information Technologies, Volume 6, № 1, pp. 83-89, 2006. 
    17.   Garvanov, I., Ch. Kabakchiev, P. Daskalov, “Systolic Architecture for Adaptive Censoring CFAR PI Detector”, 5th International Conference “Large-Scale Scientific Computing”, LSSC-2005, Springer Verlag Berlin Heidelberg, Lecture Notes in Computer Science LNCS 3743, pp. 655-662, 2006, (IF 0.402)
    18.   Kabakchiev Chr., L. Doukovska I. Garvanov, “Hough Radar Detectors in Conditions of Intensive Pulse Jamming”, Sensors & Transducers Magazine (S&T e-Didest), Special Issue, August 2005, pp. 381 – 389.
    19.   Kabakchiev Chr., Garvanov, I., V. Kyovtorov, P. Daskalov, “Error Estimation in Target Height Finding Using VHF Radars and a Three – Antenna Systems Positioned one Above the Other in a Radar Network”, Sensors & Transducers Magazine (S&T e-Didest), Special Issue, August 2005, pp. 390 – 398.
    20.   Behar, V., Chr. Kabakchiev, X.Rong Li, “Signal processing for a Benchmark for Radar Allocation in the Presence of ECM”, Journal “Signal Processing”, Volume85, Issue 4, April 2005, pp. 767 – 780, (IF 0.5)
    21.   Kabakchiev Chr., I. Garvanov, V. Kyovtorov, “Height Target Estimation in a Three Positioned Radar System”, Cybernetics and Information Technologies, Volume 5, № 2, pp. 108-116, 2005. 
    22.   Kabakchiev Chr., L. Doukovska I. Garvanov, “Adaptive censoring CFAR PI detectors with Hough transform in multipath situation”, Cybernetics and Information technologies, Volume 5, N 1, pp. 115-126, 2005. 
    23.   Kabakchiev, Ch., V. Kyovtorov, I. Garvanov: “Detection with the help of an OS CFAR processor in CDMA networks in the presence of multipath interference”, Cybernetics and Information technologies, Volume 4, N 2, pp. 101-120, 2004.
    24.   Garvanov, I., Chr. Kabakchiev and P. Daskalov: - Systolic Architecture of Adaptive Post Detection Integration CFAR Processor in Binomial Distribution Pulse Jamming, 4th International Conference on "Large-Scale Scientific Computations”, LNSC – 2003, 4-8 June 2003, Sozopol, Bulgaria, Lectures Notes and Computer Science - LNCS 2907, pp.448 455, 2004, (IF 0.515)
    25.   Behar, V., Chr. Kabakchiev, - Digital Quadrate Demodulation of LFM Signals Obtained by Lowpass Filtering, Conference "Numerical Methods and Applications – NM@A-02”, Lectures Notes and Computer Science –LNCS 2542, pp. 267-273, 2003, (IF 0.513).
    26.   Garvanov, I., V. Behar and Chr. Kabakchiev - CFAR Processors in Pulse Jamming, Conference "Numerical Methods and Applications – NM@A-02”, Lectures Notes and Computer Science –LNCS 2542, pp. 291-298, 2003, (IF 0.513).
    27.   Behar V., C. Kabakchiev, Radar waveform allocation by using of post detection integration, Compt. Rend. Acad. Bulg. Sci., Tome 55, № 1, 2002, pp. 63-68. 
    28.   Garvanov I., Chr. Kabakchiev, – One and Two Dimensions CFAR Processors in the Presence of Strong Pulse Jamming, Cybernetics and Information technologies, 2002, №1, pp.58-72.
    29.   Behar V., D. Angelova, B. Vassileva, C. Kabakchiev, E. Semerdgjiev, A set of algorithms for radar management and target tracking in presence of SOJ, Compt. Rend. Acad. Bulg. Sci., Tome 54, № 7, 2001, pp. 17-22.
    30.   Kabakchiev Chr., L. Doukovska and I. Garvanov – Comparative analysis of losses of CA CFAR processors in pulse jamming, Cybernetics and Information technologies, 1, 2001 pp. 21-35.
    31.   Хp. Кабакчиев,”Паралелни алгоритми за сигнална обработка и мултипроцесорни модулно нарастваеми системи от сигнални процесори основа за развитие на устройствата за подтискане на изкуствени електронни смущения”, Военен журнал, № 5, 145-154, 2000.
    32.   Behar V., Kabakchiev Chr. and L. Doukovska - Target Trajectory Detection in Monopulse Radar by Hough Transform, Compt. Rend. Acad. Bulg. Sci., vol. 53, №8, 2000, pp. 45-48.
    33.   Behar, V., Kabakchiev, Chr. and Doukovska, L. - Adaptive CA CFAR Processor for Radar Target Detection in Pulse Jamming, Journal of VLSI Signal Processing 26, pp. 383-396, 2000. (IF 0.513).
    34.   Даскалов П., Д. Янева, Е. Гешева, Хр. Кабакчиев, В. Бехар, "Сигнальный процессор для обработки радиолокационной информации в режиме реального времени", журнал "ИНФОРМАЦИОННЬIЕ ТЕХНОЛОГИИ", N1, "Машиностроение",Россия, 1998, стр. 37-41.
    35.   Behar, V., Kabakchiev, Chr. and Doukovska, L. - Adaptive CA CFAR Integration Processors for Target Detection in Pulse Jamming, Compt. Rend. Acad. Bulg. Sci.,. vol 51,№ 9-10, 1998,.pp.45-48.
    36.   Кабакчиев Хр., В. Бехар, Л. Дуковска "Адаптивен CA CFAR процесор за откриване на ПЛ изображения в условията на хаотични импулсни смущения", журнал "Електротехника и електроника", N 7/8, 1998, 26-35.
    37.   Kabakchiev Ch., B. Vassileva, I. Miteva  "Adaptive Doppler Processing Technique", Mathematics and Computers in Simulation, vol 43, 1997, pp 203-208.
    38.   Kabakchiev Ch., V. Behar  "Parallel Architecture of Adaptive MTD Processors", Mathematics and Computers in Simulation, vol 42/1, 1996, pp 97-105. 
    39.   Vassileva, B., Ch. Kabakchiev: “Pulse Jamming out of matched filter for a complex signal”, Compt. Rend. Acad. Bulg. Sci., 49, № 5, 1996, pp. 59-62. (IF 0.16).
    40.   Behar, V., Kabakchiev, Chr. - А double - channel filter for pulse jamming suppression, Compt. Rend. Acad. Bulg. Sci., vol. 49 (9/10), 1996, pp. 73-76. (IF 0.16).
    41.   Behar, V., Kabakchiev, Chr. - Excision CFAR Binary Integration Processors, Compt. Rend. Acad. Bulg. Sci., vol. 49 (11/12), 1996, pp. 45-48. (IF 0.16).
    42.   Kabakchiev, Chr., Behar, V., B. Vassileva, I. Miteva  - À New Plot Extractor for ADT Radar System, Compt. Rend. Acad. Bulg. Sci., vol. 48 (3), 1995, pp. 21 - 24. Behar, V., Kabakchiev, Chr. - Monte Carlo Simulation for CFAR Signal Processing, Compt. Rend. Acad. Bulg. Sci., vol. 47 (11), 1994, pp. 29 - 32. (IF 0.16).
    43.   Kabakchiev, Chr., V. Behar - Effective Algorithm for Computing Detection Probability Characteristics of Incoherent Radar, Compt. Rend. Acad. Bulg. Sci., vol. 45 (11), 1993, pp. 59 - 61. (IF 0.16).
    44.   Kabakchiev, Chr., Behar, V., B. Vassileva - Technique for Estimating the Temporal Characteristics of a Maritime Radar Range, Compt. Rend. Acad. Bulg. Sci., vol. 46 (3), 1993, pp. 53 - 55. (IF 0.16).
    45.   Kabakchiev Chr., V.Behar  "Parallel Detection Algorithm of Radar Signals ", Proc. CONPAR 92-VAPP V, Lyon, Fravce, 1992, Publish in Lecture Notes in Computer Science, vol. 634, 1992, pp 241-246.

    © Faculty of Mathematics and Informatics