A compact, two-dimensional scanning laser slope gauge has been developed for measuring ocean ripples, leading to the determination of their directional slope spectrum in the wavelength range of 4.5–81 mm. A telecentric scanning mechanism is used to enhance the dynamic range of slope measurements and to eliminate constraints caused by water-surface undulations associated with long waves. Successful laboratory tests and field trials have been performed; sample results are provided.
© 1993 Optical Society of America
Original Manuscript: January 30, 1992
Published: August 20, 1993
Qingxiong Li, Meng Zhao, Shih Tang, Shicai Sun, and Jin Wu, "Two-dimensional scanning laser slope gauge: measurements of ocean-ripple structures," Appl. Opt. 32, 4590-4597 (1993)