Beampattern Synthesis for Frequency Diverse Array Based on Time-Modulated Double Parameters Approach

T. Mu, Y. Song, Z. Wang

Abstract


The basic frequency diverse array (FDA) using linearly increasing frequency increments generates a range-angle dependent beampattern. However, it is coupled in range and angle dimensions and is also periodic in range and time, making its applications limited. In this paper, we propose a novel FDA beampattern synthesis approach utilizing the time-modulated double parameters based on the chaos sequence. The chirp signal mechanism is used instead of the single-frequency signal mechanism. Meanwhile, the multi-carrier architecture is used for range-angle decoupling. Satisfactory time-invariant range-angle beampattern can be synthesized for both single and multiple targets locations. Simulation results show the effectiveness of the proposed FDA scheme. Furthermore, comparative study with the existing technology indicates that the proposed approach can provide better performance in spatial focusing and side-lobe suppressing.

Keywords


beampattern synthesis, chaos sequence, frequency diverse array, time modulation

Full Text:

PDF

References


Antonik P, Wicks M C, Griffiths H D, et al. Frequency diverse array radars[C]//Radar, 2006 IEEE Conference on. IEEE, 2006: 3 pp.

Wicks M C, Antonik P. Frequency diverse array with independent modulation of frequency, amplitude, and phase: U.S. Patent 7,319,427[P]. 2008-1-15.

Konishi Y. Phased array antennas[J]. IEICE Transactions on Communications, 2003, 86(3): 954-967.

Farooq J, Temple M A, Saville M A. Application of frequency diverse arrays to synthetic aperture radar imaging[C]//Electromagnetics in Advanced Applications, 2007. ICEAA 2007. International Conference on. IEEE, 2007: 447-449.

Huang J, Tong K F, Baker C J. Frequency diverse array with beam scanning feature[C]//Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE. IEEE, 2008: 1-4.

Wang W Q, Shao H. Range-angle localization of targets by a double-pulse frequency diverse array radar[J]. IEEE Journal of Selected Topics in Signal Processing, 2014, 8(1): 106-114.

Wang W Q. Frequency diverse array antenna: new opportunities[J]. IEEE Antennas and Propagation Magazine, 2015, 57(2): 145-152.

Wang Y, Wang W Q, Shao H. Frequency diverse array radar Cramér-Rao lower bounds for estimating direction, range, and velocity[J]. International Journal of Antennas and Propagation, 2014, 2014.

Secmen M, Demir S, Hizal A, et al. Frequency diverse array antenna with periodic time modulated pattern in range and angle[C]//Radar Conference, 2007 IEEE. IEEE, 2007: 427-430.

Higgins T, Blunt S D. Analysis of range-angle coupled beamforming with frequency-diverse chirps[C]//Waveform Diversity and Design Conference, 2009 International. IEEE, 2009: 140-144.

Khan W, Qureshi I M, Saeed S. Frequency diverse array radar with logarithmically increasing frequency offset[J]. IEEE antennas and wireless propagation letters, 2015, 14: 499-502.

Shao H, Dai J, Xiong J, et al. Dot-shaped range-angle beampattern synthesis for frequency diverse array[J]. IEEE antennas and wireless propagation letters, 2016, 15: 1703-1706.

Khan W, Qureshi I M. Frequency diverse array radar with time-dependent frequency offset[J]. IEEE Antennas and Wireless Propagation Letters, 2014, 13: 758-761.

Yao A M, Wu W, Fang D G. Frequency diverse array antenna using time-modulated optimized frequency offset to obtain time-invariant spatial fine focusing beampattern[J]. IEEE Transactions on Antennas and Propagation, 2016, 64(10): 4434-4446.

Wang Y, Li W, Huang G, et al. Time-Invariant Range-Angle-Dependent Beampattern Synthesis for FDA Radar Targets Tracking[J]. IEEE Antennas and Wireless Propagation Letters, 2017, 16: 2375-2379.




DOI: http://dx.doi.org/10.1590/2179-10742018v17i31240

Refbacks

  • There are currently no refbacks.


© Copyright 2007-2016 JMOe Brazilian Microwave and Optoelectronics Society (SBMO) and Brazilian Society of Electromagnetism (SBMag)