A Smart Antenna System for Radar Communication Exploiting Modified Uniform Circular Array

Authors

  • Kavya Shivashankar Department of ECE, Dr. Ambedkar Institute of Technology, Nagarbhavi, Bangalore, Karnataka, India.
  • BN Umesh Department of ECE, Dr. Ambedkar Institute of Technology, Nagarbhavi, Bangalore, Karnataka, India.
  • Manjula N Department of ECE, Dr. Ambedkar Institute of Technology, Nagarbhavi, Bangalore, Karnataka, India.

Keywords:

DOA, Snapshot, MUSIC, ESPRIT, Capon, ULA, UCA, VUCA

Abstract

There are lots of spectrum estimation methods are there in array signal processing. Until today, most of the Directions of Arrival (DoA) algorithms are presented using large samples. This research work proposes a new DOA algorithm using single signal snapshot, which is the worst case scenarios in the array signal processing. Meanwhile the proposed method uses a Uniform Circular Array (UCA) to resolve multiple targets for complete 360o range without using the forward/ backward spatial smoothing of sample covariance matrix. This minimizes the complexity of computation and enhances the speed of execution. Usually, spatial smoothing methods using 100 samples require execution time of about 20 seconds for DOA estimation (using i3, 2GHz CPU processor). Since, the proposed method can resolve the multiple targets using single snapshot requires about only 2 seconds using the same processor. Hence the proposed algorithm is computationally efficient and can be used for advanced radar and sonar applications.

How to cite this article:
Shivashankar K, Umesh BN, Manjula N. A Smart Antenna System for Radar Communication Exploiting Modified Uniform Circular Array. J Adv Res Wire Mob Telecom 2021; 4(2): 12-16.

References

1. Barabell AJ. Improving the Resolution Performance of Eigen structure-Based Direction Finding Algorithms. IEEE Proc. of Int. Conf. on Acoustics, Speech and Signal Processing. 1983; 8: 336-339.
2. Vani RM. Robust 2D-Novel Smart Antenna Array for MIMO Applications. International Journal of Advanced Research in Computer and Communication Engineering 2015; 4: 271-274.
3. Wax M, Sheinvald J. Direction Finding of Coherent Signals via Spatial Smoothing for Uniform Circular Arrays. 1994; 42(5): 613-619.
4. Eiges R, Griffitths HD. Mode Space Spatial Spectral Estimation for Circular Arrays. Proc Inst Elect Eng F 1994; 14: 300-306.
5. Vani RM. Implementation and Optimization of Modified MUSIC algorithm for High Resolution DOA Estimation. IEEE Proc. of Int. Conf. on Microwave and RF Conf.2014; 193-197.
6. Minghao H, Yixin Y, Xiamda Z. UCA-ESPRIT Algorithm for 2-D Angle Estimation. IEEE ICSP 2000; 437-440.
7. Noubade A, Agasgere A, Doddi P et al. Modified Adaptive Beamforming Algorithms for 4G-LTE Smart-Phones. Advances in Intelligent Systems and Computing., Springer 2019a; 898: 561-568.
8. Degen C. On single snapshot direction-of-arrival estimation. IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE), Montreal, QC. 2017; 92-97. doi: 10.1109/WiSEE.2017.8124899
9. Hacker P, Yang B. Single snapshot DOA estimation. Advances in Radio Science 2010; 8: 251-256.
10. Drozdowicz J, Wielgo M, Samczynski P et al. 35 GHz FMCW drone detection system. IEEE International Radar Symposium 2016.
11. Fortunati S, Grasso R, Gini F et al. Single snapshot DOA estimation using compressed sensing. IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP), 2014.
12. Elbir M, Tuncer TE. Single snapshot DOA estimation in the presence of mutual coupling for arbitrary array structures. IEEE Sensor Array and Multichannel Signal Processing Workshop, 2016.
13. Li Q, Tao S, Kai W. Accurate DOA Estimation for Large-Scale Uniform Circular Array. IEEE Communications Letters 2019; 23(2): 302-305.
14. Hacker P, Yang B. Single snapshot DOA estimation. Adv Radio Sci 2010; 8: 251-256.
15. Bakhar M. Efficient Blind Beamforming Algorithms for Phased Array and MIMO RADAR. IETE Journal of Research 2017. DOI: 10.1080/03772063.2017.1351319.
16. Pillai SU, Kwon BH. Forward/ backward spatial smoothing techniques for coherent signal identification. IEEE Trans Acoust, Speech, Signal Process 1989; 37(1): 8-15.
17. Vani RM. Smart Antenna System for DOA Estimation using Nyström Based MUSIC Algorithm. Int Journal of Science and Research (IJSR) 2015; 4(4): 786-789.
18. Roy RH, Kailath T. ESPRIT estimation of parameters via rotational invariance techniques. IEEE Transactions on Acoustics, Speech and Signal Processing 1989; 37(7): 984-995.
19. Max M, Sheinvald J. Direction finding of coherent signals via spatial smoothing for uniform circular arrays. IEEE transaction on antennas and propagation 1994; 42(5): 613-620.
20. Haber F, Zoltowski M. Spatial Spectrum Estimation in a Coherent Signal Environment Using an Array in Motion. IEEE Trans 1986; 3: 301-310.
21. Han FM, Zhang XD. An ESPRIT -like algorithm for coherent DOA estimation. IEEE Antennas Wireless Propag Lett 2005; 4: 443-446.

Published

2022-04-07