Title:
DELAY TIME DIFFERENCE MEASURING DEVICE, PHASED ARRAY ANTENNA APPARATUS, DELAY TIME DIFFERENCE MEASURING METHOD AND PHASED ARRAY ANTENNA CALIBRATION METHOD
Document Type and Number:
Japanese Patent JP2016151550
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To realize shortening of time for measuring a delay time difference among multiple signal propagation systems.SOLUTION: A frequency difference detection unit 5 is provided for detecting an input signal of a receiving antenna 4 and then detecting a frequency difference Δf between a frequency fof a chirp signal transmitted from an element antenna 13-1 and a frequency fof a chirp signal transmitted from an element antenna 13-2. A delay time difference calculation unit 6 uses the frequency difference Δf detected by the frequency difference detection unit 5 and a per-unit-time frequency changing rate v of the chirp signal to calculate a delay time difference |Wire-Wire| between a propagation time Wirein a signal propagation system (1) and a propagation time Wirein a signal propagation system (2).SELECTED DRAWING: Figure 1
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Inventors:
MARUYAMA TAKASHI
YAMAGUCHI SATOSHI
HARADA TETSUJI
KIHIRA KAZUNARI
OTSUKA MASATAKA
YAMAGUCHI SATOSHI
HARADA TETSUJI
KIHIRA KAZUNARI
OTSUKA MASATAKA
Application Number:
JP2015030537A
Publication Date:
August 22, 2016
Filing Date:
February 19, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01R29/10; H01Q3/26; H01Q21/06
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Nakashima Shigeru
Hideo Kawamura
Tatsuya Sakamoto
Tsujioka Masaaki
Hamada Hatsune
Nakashima Shigeru
Hideo Kawamura
Tatsuya Sakamoto
Tsujioka Masaaki