書誌事項
- タイトル別名
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- Precision of Micro-elevation Map in Agricultural Fields Using RTK-GPS
- RTK GPS オ モチイタ ホジョウ ノ コウテイサ マップ ノ セイド ヒョウカ
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説明
Micro-elevation maps were generated by mounting a single-carrier RTK-GPS receiver on a combine harvester, and were compared with others surveyed with a laser level. Under a favorable satellite arrangement (PDOP<2.0), minimum standard errors were 5.1mm in a concrete open space and 7.7mm in a paddy field after harvest. Periodical fluctuation was observed as PDOP increased, resulting in the maximum standard error of 16.9mm and 13.6mm, respectively (PDOP≈3.0). The moving average of the elevations taken more broadly across the paths of the vehicle lowered the standard errors by up to 47% in the open space and 34% in the paddy fields. However, loss of information of micro-topography of the fields should be taken into account in the paddy fields. The ratio of standard error to altitudinal variation was considered as a criterion, and the optimal area of the moving average was 6.0m×6.0m to minimize it. In the open space, renewing a reference elevation every 3 to 4 minutes compensated for the fluctuation and lowered the standard error by 17% while a high PDOP was observed.
収録刊行物
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- 農業機械学会誌
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農業機械学会誌 70 (5), 83-91, 2008
農業食料工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204313865472
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- NII論文ID
- 10024290581
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- NII書誌ID
- AN00200470
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- ISSN
- 18846025
- 02852543
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- NDL書誌ID
- 9639026
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- データソース種別
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- JaLC
- NDLサーチ
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