JpGU-AGU Joint Meeting 2017

講演情報

[JJ] ポスター発表

セッション記号 H (地球人間圏科学) » H-TT 計測技術・研究手法

[H-TT26] [JJ] 浅層物理探査

2017年5月24日(水) 10:45 〜 12:15 ポスター会場 (国際展示場 7ホール)

コンビーナ:尾西 恭亮(国立研究開発法人土木研究所)、高橋 亨(公益財団法人深田地質研究所)、青池 邦夫(応用地質株式会社)、井上 敬資(国立研究開発法人 農業・食品産業技術総合研究機構)

[HTT26-P12] 多チャンネル地中レーダ記録の測線と反射点の位置の整合

*尾西 恭亮1小河原 敬徳1木佐貫 寛1稲崎 富士1 (1.国立研究開発法人土木研究所)

キーワード:3次元、共通中間点、速度解析

Recent multi-channel ground-penetrating radar (GPR) provides high volume of survey data in short time. Also, high accurate GNSS measurement can be easily used and the combination of GPR and GNSS provides many repeated records in the similar locations. However, repeatedly acquired GPR records cannot be acquired at the exactly same locations and must be surveyed at the slightly different locations. Positioning accuracy of RTK-GNSS is not enough to set survey locations or detect relative survey positions with between two different surveys. On the other hand, repeatedly scanned survey records using multi-channel GPR in a similar survey line have large potential to improve the signal to noise ratios of survey records and detect underground events. Matching locations of survey lines and common reflection points between repeatedly surveyed multi-channel GPR records becomes an important technique for future GPR processing. We will discuss methods of matching two or more different survey records of multi-channel GPR and show results matched with relative positions of records which are actually acquired on paved roads. A set of multi-scanned survey records has high dense information for space and many CMP records which can be useful for making a velocity distribution map.