Title :
Reduction of range finding error in NRD guide pulse radar system at 60GHz
Author :
Kuroki, Futoshi ; Takayama, Kazuya ; Takeda, Shinpei ; Yoneyama, Tsukasa
Author_Institution :
Kure Nat. Coll. of Technol., Kure, Japan
fDate :
Sept. 30 2009-Oct. 2 2009
Abstract :
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 processing, so that a VCXO (voltage controlled crystal oscillator) with high stability performance was employed to overcome such difficulty. Based on the upgraded radar signal processing, we could successfully decrease the measured error to be within plusmn 2 cm.
Keywords :
crystal oscillators; distance measurement; field programmable gate arrays; level measurement; measurement errors; millimetre wave oscillators; nonradiative dielectric waveguides; phase locked loops; radar applications; radar signal processing; tanks (containers); voltage-controlled oscillators; FPGA; NRD guide pulse radar system; PLL; VCXO; clock generation; frequency 60 GHz; measurement error; radar signal processing; range finding error reduction; tank level sensor application; voltage controlled crystal oscillator; Clocks; Error correction; Field programmable gate arrays; Level control; Phase locked loops; Radar applications; Radar signal processing; Signal generators; Testing; Voltage-controlled oscillators;
Conference_Titel :
Radar Conference, 2009. EuRAD 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4747-3
