GPS实时动态定位海上打桩定位的数学模型_姚连璧.pdfVIP

34 5 ( ) Vol. 34 No. 5 2006 5 JOURNAL OF T ONGJI UNIVERSIT Y( NATU RAL SCIENCE) May 2006 GPS 1, 2 1, 2 3 姚连璧 , 刘 春 , 周小平 ( 1. , 200092; 2. , 200092; 3. , 311 00) : GPS ( RTK) , , , . , , . : ; ; ; : TU 19 + . 2 : A : 0253- 374X( 2006) 05- 059 - 05 Sea Piling Engineering Based on GPS- RTK YA O L ianbi 1, 2, LI U Chun 1, 2, ZH O U X i aop ing 3 ( 1. Department of Surveying and Geo- Informatics, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Advanced Engineering of State Bureau of Surveying and Mapping, Shanghai 200092, China; 3. Zhuji Institute of Surveying and Design, Zhuji 311 00, China) Abstract: The principle and method regarding the positioning of sea piling engineering based on the real time kinematics of global position system technology ( GPS-RTK) are discussed in this paper. The coordinate of picket center and the azimuth of the picket body are calculated in real time by establishing the ship-fixed coordinate system. In the meantime, the coordinate transform betw een the ship-root co- ordinate system and the engineer coordinate system is also studied. The distance measurement instru- ments used on the picket and the relative movements are determined by establishing the three- dimension coordinate system of picket, w hich is transformed from the ship-fixed coordinate system. Finally, the soundness of the model is validated by an engineering application case. Key words: ship-fixed coordinate system; coordinate transfer; position mode; real time kinemati