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 (1
σ
) Standard deviation is a measure that is used to quantify the amount of variation of a set of data
values
