Introduction
LD900 Installation and Oper ations M anual
6
1.5 Terms and Abbreviations
AC
Alternating Current
APEX
VERIPOS high accuracy positioning solution
ARP
Antenna Ref erence Point
AWG
American Wire Gauge
BEIDOU
Chinese commissioned GNSS
BNC
A bayonet type of RF coaxial connector
C-O
Computed Minus Observed
cm
Centimetre
dB
Decibel
dBuV
Decibel (microVolts)
DC
Direct Current
DGNSS
Dif ferential GNSS
DGPS
Dif ferential GPS
DHCP
Dynamic Host Configuration Protocol
DOP
Dilution of Precision
DP
Dynamic Positioning
DQI
Dif ferential Quality Indicator
EN
European standard
EU
European Union
FCC
Federal Communications Commission
GALILEO
European commissioned GNSS
GLONASS
GLObal NAvigation Satellite System - Russian commissioned GNSS
GNSS
Global Navigation Satellite System
GPS
Global Positioning System - United States commissioned GNSS
HDOP
Horizontal Dilution of Precision
HDR
High Dynamic Range
Hz
Hertz
ID
Identif ication
IEC
International Electrotechnical Commission
IMU
Integrated Mobile Unit
INS
Inertial Navigation System
IP
Internet Protocol
IPv4
Internet Protocol Version 4
kg
Kilogram
kHz
Kilohertz
lb
Pound (unit of measuring weight)
LAN
Local Area Network
L-band
Signal transmitted to carry correction data to mobile users
LED
Light Emitting Diode
LNA
Low Noise Amplifier
MF
Third party broadcasting service also referred to as 'MF' or 'Beacon'
MHz
Megahertz
MM
Millimetre
MMI
Man Machine Interf ace
NM
N-Type (male) coaxial connector
NMEA
National Marine Electronics Association
NTRIP
Networked Transport of RTCM via Internet Protocol
Ohm
Unit of electrical resistance
PDOP
Positional Dilution of Precision
PPP
Precise Point Positioning
PPS
Pulse Per Second
PRN
Pseudo Random Noise
PWR
Power
QZSS
Quasi-Zenith Satellite System - Japanese commissioned GNSS
