HLY-03-01 ADCP Data (2-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.

美国海岸警卫队海利号（USCGC Healy）搭载一台安装于船体下方的75 kHz相控阵声学多普勒流速剖面仪（Acoustic Doppler Current Profiler，ADCP，型号Ocean Surveyor），用于发射并接收声脉冲回波，以此估算水平流场的垂直剖面。姿态信息（包括航向、俯仰与横滚）由阿什泰克ADU2-3DGPS接收机提供，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。上述数据流可输出以地球为参考基准的绝对水平流场及其垂直变化，探测覆盖范围为海面下约20米至海底或约400米水深。