2 IMCA M 229
2 Glossary of Terms
ATEX ATmosphères EXplosibles
CE Conformite Europeenne. Mandatory marking for products sold in the European Economic Area (EEA)
Clutter Radar signal that is echoed back towards the sensor
DAC Digital to analogue converter
Dashboard Graphical user interface used to control the sensor
DGNSS Differential global navigation satellite system
DGPS Differential Global Positioning System
DP Dynamic positioning
DSB Dual side band
DSP Digital signal processing
EMC Electro-magnetic compatibility
FCC Federal Communications Commission. Among many of its functions it specifies the
electromagnetic interference specification for products manufactured or sold in the United States
FMCW Frequency-modulated continuous wave
FSK Frequency shift key
GPS Global Positioning System
HPR Hydroacoustic positioning reference system
I/O Input/output
IMCA International Marine Contractors Association
IMO International Maritime Organization
IP Internet protocol
LAN Local area network
LED Light emitting diode
mrad milli-radians
OSV Offshore supply vessel
PCI Peripheral component interconnect
PSK Phase shift key
PSV Platform support vessel
RAS Replenishment at sea
RCS Radar cross section
Reflection RF signal received by the sensor from the responder
Responder Purpose built hardware unit mounted on a structure, which retransmits a modulated version of
the signal it receives from a Mini RadaScan sensor
RF Radio frequency
RX Received RF signal
Series1 miniResponders that implement FSK-DSB
Series2 miniResponders that implement PSK-SSB
SSB Single side band
Target A processed and positively identified return from a responder
TX Transmitted RF signal
UL Underwriters Laboratories Inc. The leading North American product safety certification
organisation, whose certifications are recognised world-wide
UPS Universal power supply
VFD Vacuum fluorescent display
1 sigma (1σ) Standard deviation is a measure that is used to quantify the amount of variation of a set of data
values
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