Cruise Report – 05 Data Sources and Type

Cruise Report: R/V Surf Surveyor Cruise S1-00-CL, Mapping the Bathymetry of Crater Lake, Oregon, 2000

 Data Sources and Type

Raw EM1002 data telegrams were acquired over a shipboard Ethernet network. The data stream is shown in Table 1. In addition, a number of ancillary data sources were also acquired by C&C Technologies (Table 2).

Table 1. Kongsberg Simrad EM1002 data stream.

  • entered static sonar alignment parameters.

  • applied sound velocity profiles.

  • external navigation data (1-Hz DGPS)

  • ship-relative bathymetric profile data.

  • beam-relative backscatter intensity data

Table 2. Ancillary data sources

  • transducer temperature, conductivity and (derived) sound speed data.

  • POS/MV 1-Hz position and attitude data (over Ethernet).

  • independent serial record of DGPS data stream (GPGGA format).

  • digital 21-Hz attitude from TSS-335B.

  • original SeaBird SVP data



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