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Patent Searching and Data


Title:
TRACKING RECEIVER, ANTENNA DEVICE, AND TRACKING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/208434
Kind Code:
A1
Abstract:
Leakage of a sum signal to a difference signal in an analog circuit of a tracking receiver causes a bias to occur in an orientation error, and tracking accuracy deteriorates. This tracking receiver is provided with: a complex sum signal generating unit 8S, 9 which generates a complex sum signal by converting a sum signal output by an antenna 1 to a digital value after quadrature detection or by performing quadrature detection after conversion to a digital value; a complex difference signal generating unit 8D, 9 which generates a complex difference signal by converting a difference signal output by the antenna 1 to a digital value after quadrature detection or by performing quadrature detection after conversion to a digital value; a first correction factor storage unit 10 which stores a first correction factor represented by a complex number; a complex difference signal correcting unit 11 which corrects the complex difference signal on the basis of the complex sum signal and the first correction factor to calculate a corrected complex difference signal; and an orientation error calculating unit 12 which, on the basis of the corrected complex difference signal and the complex sum signal, calculates an orientation error, which is the difference between an arrival direction, being the direction from which radio waves arrive, and the orientation, being the direction in which the antenna faces.

Inventors:
SHOJI, Takanori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
KOMAI, Kenji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2019/016824
Publication Date:
October 31, 2019
Filing Date:
April 19, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
G01S3/42; G01S13/68; H01Q3/02
Foreign References:
JPH0584884U1993-11-16
JPH07234276A1995-09-05
JP2011220578A2011-11-04
JPH11284534A1999-10-15
JP2008216070A2008-09-18
JPH09264942A1997-10-07
JPH0968568A1997-03-11
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
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