Antenna array beam steering using time-varying weights

Plumb, R.G.

doi:10.1109/7.104243

Cited by 6 publications

(1 citation statement)

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“…10a for a sixteen-element linear phased array [21]. The frequency scanning can be removed by using time-varying phase shifts, i.e., varying s with time, as described in reference [22]. Fig.…”

Section: Frequency Dispersion and Time Varying Phase Weightsmentioning

confidence: 99%

Distributed Phased Arrays and Wireless Beamforming Networks

Jenn

Loke

Matthew

et al. 2009

International Journal of Distributed Sensor Networks

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Distributed phased arrays have advantages over conventional arrays in many radar and communication applications. Additional advantages are realized by replacing the microwave beamforming circuit by a wireless network, thus forming a wirelessly networked distributed sensor array. This article examines various aspects of a distributed phased array that incorporates wireless beamforming. First, the fundamental array theory and digital signal processing are reviewed. Basic equations are presented and compared to simulations for a ship-based radar application. Next the basic array architecture is described and the critical techniques and components that are required to realize the design are discussed. Methods are introduced for time and phase synchronization, transmit-receive isolation, sensor location issues, and bandwidth and frequency dispersion.

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Section: Frequency Dispersion and Time Varying Phase Weightsmentioning

confidence: 99%

Distributed Phased Arrays and Wireless Beamforming Networks

Jenn

Loke

Matthew

et al. 2009

International Journal of Distributed Sensor Networks

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Matched filter response of a linear array with time-varying phase weights

Plumb

1993

IEEE Trans. Aerosp. Electron. Syst.

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levels. Finally, the algorithm presented here allows the computation of the requisite number of filters in a dynamic environment in which the constraints (and hence the optimal filter bank) change over time.On sub optimal detection of three-dimensional moving targets.Phased-array antennas used in radars to transmit broadband linear frequency modulated (LFM) signals suffer from array dispersion. Array dispersion causes decreases in the matched mter slgnal-to-nolse ratio and the range resolution of the radar.By allowing the phase weights to vary in time the amount of array dispersion can be greatly reduced and the useful instantaneous bandwidth of the array increased Results are presented for the array output and matched mter response for a linear array using .time-varying phase weights and are compared with a traditional phased array.

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