Reson SeaBat 7125 ROV, Руководство оператора

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SYSTEM PERFORMANCE AND DATA TYPES
SeaBat 7125 ROV Operator‟s Manual
Page 104 May 30, 2011
Version 3
7.1.3 Snippets Data
Snippets data is available from the SeaBat 7125 ROV. Each snippet consists of a
windowed selection of amplitudes taken from the bottom detection point of each beam.
A snippets data sample contains corrected backscatter data from the „footprint‟ on the
seabed illuminated by a single sonar ping. The number of snippets in a swath is a
function of the number of sonar beams. The length of each snippet depends on the
operating mode, beam number, and depth. All of these settings may be selected by the
operator.
Figure 42: Graphic Illustration of Snippets Data
Each snippets data packet contains pertinent information such as time stamp, sequential
ping number, sample rate, sound velocity, and operator settings such as power, gain,
absorption, and range scale.