© The Institution of Engineering and Technology
The beampattern of a conventional frequency diverse array (FDA) with linear frequency pattern (i.e. the centre frequency of each antenna element is linearly increasing) is coupled in range and angle. FDA with random frequency pattern can decouple the range and angle with high probability only when the number of elements is sufficiently large. The ambiguity of frequency patterns that are random permutations of a linear FDA is examined. An eigenvector-based criterion to identify possible ambiguity in target localisation using such arrays is proposed. Numerous results are presented to verify the effectiveness of the proposed ambiguity identification criterion.
References
-
-
1)
-
51. Baizert, P., Hale, T.B., Temple, M.A., et al: ‘Forward-looking radar GMTI benefits using a linear frequency diverse array’, Electron. Lett., 2006, 42, (22), pp. 1311–1312 (doi: 10.1049/el:20062791).
-
2)
-
9. Jones, A.M.: ‘Frequency diverse array receiver architectures’, , Wright State University, 2011, pp. 16–17.
-
3)
-
1. Xu, J., Liao, G., Zhu, S., et al: ‘Deceptive jamming suppression with frequency diverse MIMO radar’, Signal Process., 2015, 113, pp. 9–17 (doi: 10.1016/j.sigpro.2015.01.014).
-
4)
-
7. Gao, K., Wang, W.Q., Cai, J., et al: ‘Decoupled frequency diverse array range-angle-dependent beampattern synthesis using non-linearly increasing frequency offsets’, Microw. Antennas Propag., 2016, 10, (8), pp. 880–884 (doi: 10.1049/iet-map.2015.0658).
-
5)
-
85. Xu, J., Liao, G.S., Zhu, S.Q., et al: ‘Joint range and angle estimation using MIMO radar with frequency diverse array’, IEEE Trans. Signal Process., 2015, 63, (13), pp. 3396–3410 (doi: 10.1109/TSP.2015.2422680).
-
6)
-
8. Sammartino, P.F., Baker, C.J., Griffiths, H.D.: ‘Range–angle dependent waveform’. Proc. IEEE Radar Conf., Arlington, VA, USA, May 2010, pp. 511–515.
-
7)
-
5. Liu, Y., Ruan, H., Wang, L., et al: ‘The random frequency diverse array: a new antenna structure for uncoupled direction-range indication in active sensing’, J. Sel. Top. Signal Process., 2017, 11, (2), pp. 295–308 (doi: 10.1109/JSTSP.2016.2627183).
-
8)
-
92. Khan, W., Qureshi, I.M., Saeed, S.: ‘Frequency diverse array radar with logarithmically increasing frequency offset’, IEEE Antennas Wirel. Propag. Lett., 2015, 14, pp. 499–502 (doi: 10.1109/LAWP.2014.2368977).
-
9)
-
3. Ran, D., Jia, X.: ‘Enhanced back projection algorithm for linear frequency diverse array synthetic aperture radar imaging’. Proc. VDE EUSAR'16, Hamburg, Germany, June 2016, pp. 1–5.
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Identifying unambiguous frequency pattern for target localisation using frequency diverse array