Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Nick Whitelonis"'
Publikováno v:
IEEE Transactions on Antennas and Propagation. 60:1660-1665
The near-field to far-field transformation (NFFFT) algorithm from Mensa and Vaccaro is applied to obtain the far-field Doppler signatures of wind turbines based on near-field measurement data. A set of angular window and sampling criteria are derived
Autor:
Hao Ling, Nick Whitelonis
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 9:145-148
The potential of using a circular metal pipe with two open ends as a propagation channel for through-wall radar is investigated. A modal formulation is used for simulating the backscattering from a target through a circular pipe. A target is observed
Autor:
Hao Ling, Nick Whitelonis
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 9:417-420
Beamforming through a circular pipe with two open ends is investigated. A formulation is presented for one-way beamforming through a pipe and demonstrated through simulation. One-way beamforming is then extended to two-way beamforming and applied to
Publikováno v:
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.
The time-varying Doppler signatures of a wind turbine in the presence of ground are simulated and interpreted. Both a point-scatterer model and high-frequency ray tracing are used to simulate the ground effect. The Doppler spectrogram shows two addit
Autor:
Hao Ling, Nick Whitelonis
Publikováno v:
2011 IEEE International Symposium on Antennas and Propagation (APSURSI).
In this paper, we show how synthetic aperture radar techniques used in free space can be adapted to the problem of imaging through an open pipe. By collecting monostatic data along a synthetic aperture and projecting into the matched filter of the pi
Autor:
Hao Ling, Nick Whitelonis
Publikováno v:
2010 IEEE Antennas and Propagation Society International Symposium.
The backscattering from circular pipes open at one end has been extensively studied by the radar signature community [1–5]. It serves as a simple model for open cavities and inlet-type structures on a complex target. For the pipe rim scattering, th
Autor:
Hao Ling, Nick Whitelonis
Publikováno v:
2010 IEEE Antennas and Propagation Society International Symposium.
There is a continuing interest in the through-wall capabilities of radar for surveillance applications [1]. It has been found that walls behave as a low-pass medium [2], and typically through-wall radar is restricted to frequencies in the low GHz ran