论文信息 - Hadamard speckle reduction for millimeter wave imaging

Hadamard speckle reduction for millimeter wave imaging

Millimeter wave imaging technology makes possible imaging of phenomena, which are inaccessible to visible light, but suffer from speckles, produced by coherent sources. We report a 50% speckle reduction, measured with a free-space vector network analyzer over the full W-band. Our experiments demonstrate how Hadamard mask operates as a tunable filter. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1722–1725, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21747

Roger Vounckx | Irina Jaeger | G. Koers | G. Poesen | Johan Stiens

[1] Jahja I. Trisnadi. Hadamard speckle contrast reduction. , 2004, Optics letters.

[2] Joseph W. Goodman,et al. Dependence of image speckle contrast on surface roughness , 1975 .

[3] J. Goodman. Statistical Properties of Laser Speckle Patterns , 1963 .

[4] J. A. Decker,et al. Hadamard transform imager and imaging spectrometer. , 1976, Applied optics.

[5] J.-C. Bolomey,et al. Recent European developments in active microwave imaging for industrial, scientific, and medical applications , 1989 .

[6] G. Parry. Some Effects of Temporal Coherence on the First Order Statistics of Speckle , 1974 .