NDLI: Fast techniques for sensor array calibration

Content Provider	IEEE Xplore Digital Library
Author	McCarthy, F. Ridgway, R. Paulraj, A.
Copyright Year	1994
Description	Author affiliation: ARGOSystems Inc., USA (McCarthy, F.; Ridgway, R.; Paulraj, A.)
Abstract	Antennas arrays have long been used on airborne reconnaissance platforms for direction finding (DF) applications. The antenna arrays used for communications signals (20-500 MHz) are usually calibrated during special calibration flights. In a calibration flight, the airborne platform flies a known flight path where the angle-of-arrival (AOA) to the calibration source varies over 360 deg. Calibration flights are extremely expensive, time consuming and often experience co-channel interference. As calibration requirements become more demanding, the duration of the calibration flights can grow dramatically. For example, if azimuth and elevation calibration is required, the calibration flight time may increase by five to ten times. The authors propose a new calibration technique based on the constant-modulus, blind-adaptive beamforming methods where one can calibrate an antenna array using multiple co-channel signal sources, thereby significantly reducing the calibration time. The effectiveness of this technique with real data collected from an airborne platform is shown.
Starting Page	688
Ending Page	693
File Size	549612
Page Count	6
File Format	PDF
ISBN	0818664053
ISSN	10586393
DOI	10.1109/ACSSC.1994.471540
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-10-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensor arrays Calibration Antenna arrays Azimuth Aircraft Antenna measurements Reconnaissance Scattering Frequency estimation Partial response channels
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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