Journal of the Geodetic Society of Japan
Online ISSN : 2185-517X
Print ISSN : 0038-0830
ISSN-L : 0038-0830
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Volume 46, Issue 4
Displaying 1-2 of 2 articles from this issue
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  • Precise Variance Detection by a Single GPS Receiver
    -PVD (Point precise Variance Detection) Method-
    Hiroshi Isshiki, Atsushi Tsuchiya, Teruyuki Kato, Yukihiro Terada, Hid ...
    2000 Volume 46 Issue 4 Pages 239-251
    Published: December 25, 2000
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.11366/sokuchi1954.46.239
    JOURNAL FREE ACCESS
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    A new positioning method (PVD) by a single point GPS receiver is proposed . Since it is a point measurement, a reference point is not required, and it would make possible to build a simple and low-cost measuring system. Carrier wave phases make a high precision measurement possible, but the initial phase ambiguities are not required to solve, when the variation component of the observation point coordinates is the target of the measurement as in the present method. The load of the calculation is not heavy. Hence, it would make a quasi-real-time measurement of high frequency variation possible. However, errors due to satellites are noteliminated at present since PVD is a point measurement, and errors in low frequency regionsmay not be negligible, when the variation of the coordinates is small. Applications to wave measurements by an ocean buoy and earthquake measurements are expected.
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  • Precise Variance Detection by Simplified Kinematic GPS Measurements
    -KVD (Kinematics for precise Variance Detection) Method-
    Hiroshi Isshiki, Atsushi Tsuchiya, Teruyuki Kato, Yukihiro Terada, Hid ...
    2000 Volume 46 Issue 4 Pages 253-267
    Published: December 25, 2000
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.11366/sokuchi1954.46.253
    JOURNAL FREE ACCESS
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    A new positioning method (KVD) by relative GPS measurements is proposed. Noises in low frequency region not eliminated sufficiently by PVD method are reduced much . Carrier wave phases make possible a high precision measurement in a broad range of frequency. Resolution of initial phase ambiguities are not required, if the variation component of the observationpoint coordinates is the target of the measurement as in the present method . Hence, loads of the calculation and communication are reduced drastically. In addition, the baseline may be extended drastically. Applications to wave measurements by an ocean buoy and measurements of long period earthquake are expected.
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