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Title: Development of an airborne MMW FM-CW radar for mapping river ice
Authors: Thayer School of Engineering.
Dartmouth College.
Yankielun, Norbert E.
Ferrick, M. G.
Weyrick, Patricia B.
Keywords: Airborne
High resolution radar
Ice profiling
Millimeter waves
Radar remote sensing
River ice
Lake ice
FM-CW radar
Continous wave radar
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: CRREL report ; 93-1.
Description: CRREL Report
Abstract: Analyses of a river's freezeup ice cover stability and its breakup rely on detailed knowledge of the cover's thickness and the variability of that thickness. A high-resolution, millimeter wave (26.5- to 40-GHz) Frequency Modulated-Continuous Wave radar with real-time data acquisition and digital signal processing and display capability was deployed from a low-flying (3-10m) helicopter to continuously acquire, process and display data during an ice thickness profiling survey of a 24-km study reach. A nominal sheet ice thickness of 50 cm, occasional areas of new ice sheet as thin as 5 cm, open leads, and massive ice accumulations on the order of 5 m thick were encountered. Radar profiling data agreed with ground truth from borehole measurements of the sheet ice, and provided a more detailed view of the ice conditions than that obtained from a low altitude video survey. The radar system provided rapid, safe and accurate data acquisition, allowing detailed mapping of the ice conditions throughout the reach.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:CRREL Report

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