EdgeTech data format

Also known as JSF, a data format for marine sonar data. Output by EdgeTech JStar acquisition software.

Some resources:
 * Format description document
 * some utilities, including jsf2segy — for converting to SEG-Y format.
 * jsf2xtf — Another converter

jsf2segy
From the docs: "The jsf2segy package is a free software, written by Tom O’Brien (USGS, Woods Hole Coastal and Marine Science Center) in 2004, with last update in 2005. It allows the conversion of Edgetech jsf 512i seismic data format to SEGY Rev_1. This manual describes briefly different folders which come up with this application, summarizes necessary actions that should be taken in order to convert properly jsf format into segy with special emphasis on different steps regarding the compilation of the code. — Tom O'Brien, USGS"