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A technique to reduce the range finding error in the NRD-guide pulse radar system was proposed for tank level sensor applications at 60 GHz. The considerable sensing error to be plusmn 15 cm, which was bigger than the theoretical one, was measured in the first range finding test. It was predicted that the measured error was due to clocks generated in a PLL embedded into an FPGA for the radar signal...
From the viewpoint of range findings of multi layers in a tank, pulse radar systems using millimeter-wave frequencies are preferable for such multi-reflection environment because pencil beam patterns can be easily obtained. With this in mind, pulse radar front-ends using an NRD-guide technology were fabricated. And moreover, an FPGA-based digital signal processor including high-speed counting, memorizing,...
A pulse radar front-end using an NRD-guide technology was fabricated as an level sensor at millimeter wavelengths, and range finding was performed by using it. Multi-reflection however occurred between a target and a planar antenna due to a pencil beam pattern of our-developing planar antenna, so that precise distance estimation could not be performed for short range detection. To overcome such difficulty,...
This paper reports the first trial in which spatially and temporally fine-grained power-down control has been implemented in a high-performance processor in the sense that the FPUs are controlled spatially and dynamically based on the execution sequence.
A pulse radar front-end using an NRD-guide technology was fabricated as an level sensor at millimeter wavelengths, and range finding was performed by using it. Multi-reflection however occurred between a target and a planar antenna due to a pencil beam pattern of our-developing planar antenna, so that precise distance estimation could not be performed for short range detection. To overcome such difficulty,...
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