var __index = {"config":{"lang":["en"],"separator":"[\\s\\-]+","pipeline":["stopWordFilter"],"fields":{"title":{"boost":1000.0},"text":{"boost":1.0},"tags":{"boost":1000000.0}}},"docs":[{"location":"index.html","title":"User Manual","text":"Note <p>This manual is under development.</p> <p>Info</p> <p>If you opened this documentation from the sonarcal program you will be reading the offline version. The online version is available here.</p>"},{"location":"index.html#introduction","title":"Introduction","text":"<p>This is the user documentation for the sonarcal program.</p> <p>It supports viewing and deriving beam gain calibrations from omni-directional sonars:</p> Manufacturer Model Supported file formats Furuno XXX sonar-netCDF4 Kongsberg Discovery SU90 sonar-netCDF4 Kongsberg Discovery CS90 raw, sonar-netCDF4 Kongsberg Discovery SN90 raw, sonar-netCDF4 <p>Other sonars that output sonar-netCDF4 files may also work, but there can often be small adjustments needed for full support.</p> <p>The development of the current form of this program was supported by AZTI. Earlier versions were developed while the author was employed at the Norwegian Institute of Marine Research.</p>"},{"location":"index.html#how-to-use","title":"How to use","text":"<p>The main operation screen.</p> <p></p> <p>The seconday display of ping amplitudes.</p>"},{"location":"index.html#configuration","title":"Configuration","text":"<p>some text</p>"},{"location":"index.html#export-of-data","title":"Export of data","text":"<p>some text</p>"},{"location":"technical.html","title":"Technical Manual","text":"Note <p>This manual is under development.</p> <p>This is the technical documentation for the sonarcal program.</p>"},{"location":"technical.html#adding-support-for-other-sonars","title":"Adding support for other sonars","text":""},{"location":"technical.html#beam-angles-and-coordinate-systems","title":"Beam angles and coordinate systems","text":"<p>This can be tricky. The sonarcal code requires that the beam angles go from -180 to 180 with 0 in the forward direction (drawn upwards on the omni echogram). Negative angles to port and positive angles to starboard.</p> <p>Sonar-netCDF4 files have their beam angles given as vectors in the sonar-netCDF4 coordinate system (x-axis is forward, y-axis to starboard, and z-axis down). The sonarcal code transforms these to -180 to +180. The sonar-netCDF4 also contains beam labels that are separate from any other beam property.</p> <p>The various raw files have their beam angles in degrees, not necessarily the same as sonarcal requires, so sonar-specific conversions are included in the code that reads the raw files. Raw files tend not to have explicit beam labels and instead the order (index) of the beams in the raw file is used as the beam name (so 0, 1, 2, etc).</p> <p>When adding support for a new sonar it is very important to check that the beam angles and labels that sonarcal uses do correspond to the beam labels that would be used when applying a beam calibration/gain.</p> <p>Sonarcal also assumes that for a given beam index, the beam to port has an index of one less and the beam to starboard has an index of one more. This assumption may be problematic if a sonar has an angle convention the opposite of this.</p>"}]}