測量・計測 (3)

[VI-615] As-built measurement by single frequency GNSS system using NTRIP

*大橋 祥子¹、大手 一信²、半谷 一晴³、先村 律雄⁴ (1. 関東測量、2. 大手組、3. クリーンデータ、4. 群馬工業高等専門学校)

Keywords:single frequency GNSS, RTK, NTRIP Caster, as-built measurement

Test GNSS reference station was set up using an inexpensive single frequency GNSS receiver. RTCM data generated by this GNSS reference station can be acquired via the Internet. RTCM data could be acquired at a test site about 3 km away from the GNSS reference station. At this test site, as-built was measured using single frequency RTK-GNSS system. As compared with the conventional method, the measurement time could be reduced by 95% In this experiment, no difference was found in the positioning accuracy by either method of surveying.