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    • 6. 发明专利
    • Radar equipment
    • JP5413333B2
    • 2014-02-12
    • JP2010194070
    • 2010-08-31
    • 三菱電機株式会社
    • 知也 松田正彦 小浜健太郎 酒井英樹 伏見
    • G01S7/40G01S7/02
    • PROBLEM TO BE SOLVED: To provide a radar device capable of measuring and compensating a phase of a cable up to an antenna device, when a temperature difference is generated in a field, concerning a large-scale phased array antenna device. SOLUTION: This radar device includes: a plurality of transmission lines connected respectively to a plurality of element antennas, for transmitting a transmission wave and a reception wave; and a phase setting part for controlling a phase-shift quantity of a plurality of phase shifters other than a phase shifter corresponding to a short-circuited transmission line, relative to a phase of each signal transmitted through a plurality of transmission lines other than the short-circuited transmission line, when at least one portion is switched to a short-circuit state, among a plurality of connection/short-circuit switching portions capable of switching connection between the plurality of phase shifters and the plurality of element antennas to the short-circuit state respectively, and changing each phase successively. In the radar device, the phase is compensated from an addition value of reflected wave data accumulated in a prescribed number of times by a data accumulation part for accumulating successively a reflected wave of each transmission wave from a wave source including a reflected wave generated by short circuit by the plurality of connection/short-circuit switching portions in the transmission wave from the wave source. COPYRIGHT: (C)2011,JPO&INPIT