Unwrapping of phase values at array antenna elements

Details Unwrapping of phase values at array antenna elements Unwrapping of phase values at array antenna elements

2011-05-03

2011-05-03

Gregory, Bernarr E (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Testing or calibrating of radar system

By monitoring

C342S165000, C342S173000, C342S175000, C342S195000, C342S368000, C342S377000

Reexamination Certificate

active

07936302

ABSTRACT:
A method and apparatus are described for the unwrapping of a set of phase values observed for an incoming signal on a phased array antenna. The difference between values observed on adjacent elements in the array forms a first data set. The differences between adjacent ordinates in the first data set forms a second data set. The values in the second data set are rounded to the nearest whole multiple of one complete cycle before the differencing process is reversed to provide the values (representing a whole number of complete cycles) which are added to the observed phase values to provide the unwrapped phase values.

REFERENCES:
patent: 4975704 (1990-12-01), Gabriel et al.
patent: 5260708 (1993-11-01), Auterman
patent: 5307070 (1994-04-01), Runge et al.
patent: 5424743 (1995-06-01), Ghiglia et al.
patent: 5442359 (1995-08-01), Rubin
patent: 5530449 (1996-06-01), Wache et al.
patent: 5572220 (1996-11-01), Cai
patent: 5608405 (1997-03-01), Pritt
patent: 5657027 (1997-08-01), Guymon, II et al.
patent: 5659318 (1997-08-01), Madsen et al.
patent: 5701074 (1997-12-01), Zhu
patent: 5726656 (1998-03-01), Frankot
patent: 5783942 (1998-07-01), Bernstein et al.
patent: 5835055 (1998-11-01), van der Kooij
patent: 5923278 (1999-07-01), Poehler et al.
patent: 5923279 (1999-07-01), Bamler et al.
patent: 5955993 (1999-09-01), Houghton et al.
patent: 6011625 (2000-01-01), Glass
patent: 6097328 (2000-08-01), Frankot
patent: 6107953 (2000-08-01), Dwyer et al.
patent: 6150973 (2000-11-01), Pritt
patent: 6570534 (2003-05-01), Cohen et al.
patent: 6677885 (2004-01-01), Frankot
patent: 6703835 (2004-03-01), Patch et al.
patent: 6762714 (2004-07-01), Cohen et al.
patent: 6891370 (2005-05-01), Cline et al.
patent: 6954173 (2005-10-01), Mrstik
patent: 6985605 (2006-01-01), Ueki et al.
patent: 7173563 (2007-02-01), Boonstra et al.
patent: 7305053 (2007-12-01), Van Houtum
patent: 2005/0001760 (2005-01-01), Mrstik
patent: 0 713 261 (1996-05-01), None
patent: 2 171 849 (1986-09-01), None
patent: 2 386 947 (2003-10-01), None
patent: WO 96/09558 (1996-03-01), None
patent: WO 2004/017090 (2004-02-01), None
International Search Report dated Feb. 1, 2007 (Four (4) pages).
Form PCT/ISA/220 and Form PCT/ISA/237 dated Feb. 1, 2007 (Seven (7) pages).
O. Grellier et al., “Self Calibration in Presence of Correlated Discrete Sources”, EUSIPCO, published 1998, pp. 185-188, vol. 9.
D. M. Fernandez et al., “Calibration of HF Radar Systems with Ships of Opportunity”, IEEE 2003 Internationsl Geoscience and Remote Sensing Symposium. Proceedings, Jul. 21-25, 2003, pp. 4271-4273, vol. 7 of 7, Toulouse, France, New York, NY.
M. P. Wylie et al., Joint DOA Estimation and Phase Calibration of Linear Equispaced (LES) Arrays, IEEE Transaction on Signal Processing, 1994, pp. 3449-3459, vol. 42, No. 12, New York, NY.
T. A. Valentic et al., “Self-Survey Calibration of Meteror Radar Antenna Arrays”, IEEE Transactions on Geoscience and Remote Sensing, May 3, 1997, pp. 524-531, vol. 35, No. 3.
Great Britain Search Report dated Feb. 16, 2006.
Great Britain Search Report dated Feb. 8, 2006.
International Search Report dated Feb. 9, 2007.
PCT/ISA/237 Form.

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