HLY-03-03 ADCP Data (5-min Averages) [Muenchow, A.]

The United States Coast Guard Cutter (USCGC) Healy contains a 75-kHz phased-array Acoustic Doppler Current Profiler (ADCP) (Ocean Surveyor) mounted under the hull to transmit and receive echos of acoustic pulses from which to estimate vertical profiles of horizontal currents. Attitude information such as heading, pitch, and roll is provided by an Ashtech ADU2-3DGPS receiver while position data are provided by a Trimble Centurion p-code DGPS system. These data streams provide earth-referenced absolute horizontal currents and their vertical variations from about 20-m below the surface to the bottom or about 400-m depth.美国海岸警卫队希利号（USCGC Healy）搭载一台安装于船底的75千赫兹相控阵声学多普勒流速剖面仪（Acoustic Doppler Current Profiler，ADCP，型号为Ocean Surveyor），用于发射和接收声学脉冲回波，以此估算水平海流的垂直剖面。航向、纵倾与横摇等姿态信息由阿什泰克ADU2-3DGPS接收机提供，而位置数据则由天宝Centurion P码差分全球定位系统（Differential Global Positioning System, DGPS）提供。上述数据流可提供以地球坐标系为基准的绝对水平海流及其垂直变化，探测范围覆盖海面下约20米至海底，最大探测深度约400米。