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VLA
Both the VLA and TLA's data were recorded aboard the R/P FLIP (FLIP's Position: 32d40.254' N
117d21.635' W). The two HLAs' data were recorded at an onshore recording station.
Position 32d40.254' N, 117d21.620' W Aperture 120 m Number of Elements, Total 64 Number of Elements, Processed 21 Array Sampling Rate 1500 Hz Sensor Calibration 185.3dB Line of Bearing, re clockwise North* N/A Water Depth 216.5 m *Line of Bearing is calculated from Element #1 to the last element. For the TLA, Element #1 is the deepest and furthest from FLIP. For the HLA North and HLA South arrays, Element #1 is the southernmost element.
Element Positions
The VLA was not purely vertical. It had a small tilt of 2 or 3 degrees from vertical toward the west, which was determined via conventional matched field processing using the highest level tonal set and known source locations. Corrections to element positions can be made using these array tilt estimates. Since the source track is not a true radial track, note that the apparent array tilt (from the perspective of the source) changes over time, i.e., range.
To download a tab-delimited, ASCII version of the positions in the table below, click here for the file "positions_vla.txt" (4 KB). The data files under Event S5 and Event S59 have the channels reversed. So process the data with the array positions reversed. So channel 1 will have a depth of 94.125 m and channel 21 (of data file) will have a depth of 212.25 m.
NumberNote: Element #43 was bad and is thus not included for the VLA.