Forward observer instrument functional model - user trials at lvdalen, Sweden, 12-17 november 1998
Abstract
This report presents the results of user trials carried out in Alvdalen in Sweden with a functional madel of a
forward observer instrument.
The modular functional model is made up of a main module developed in co-operatian by FFI and Simrad
Optronics ASA, a gyro compass with a fiberoptic gyro, developed by FFI, and a goniometer developed by Leica
Geosystems AG. The main module includes an eyesafe laser rangefinder, internal digital magnetic com pass and
internal GPS.
The report includes the results achieved both with handheld operation of the main mod ule with bearing obtained
from its built in digital magnetic compass, and with tripod-mounted operation with bearing obtained from the
more accurate gyro campass and goniometer. Also the ergonomics of the functional model are discussed.