Home of RF and Wireless Vendors and Resources

One Stop For Your RF and Wireless Need

Avionic Systems

This page covers various avionic systems used as short range navigational aids, long range navigational aids and approach landing navigational aids. It includes ADF, NDB, VOR, LORAN, OMEGA, MLS, DME, TACAN, GPS, ALS, VASIS, DNS, INS, IRS, RNAV, VORTAC, ILS, LOC, GS, LOC-DME, MB, DGPS navigational aids etc. The difference between these avionic systems have been mentioned in tables below.

Short Range Navigational Aids- ADF, NDB, VOR, DME, TACAN, VORTAC, RNAV

Short
range
system
Meaning Principle Frequency
of operation
System
location
RF Wireless
World
Reference
ADF Automatic Direction Finder Provides Aircraft bearing with respect to Ground Station MF Located at Aircraft ADF
NDB Non Directional Beacon Ground system used as an Automatic Direction Finder Transmit for bearing purposes Medium Frequency(MF) Located at Ground
VOR VHF Omni Directional Range Provides Aircraft radial with respect to a Ground Station VHF Located at Ground and Aircraft VOR
DME Distance Measuring Equipment Provides distance between Aircraft and Ground Station UHF located at ground and Aircraft DME
NDB-DME NDB and DME GND system with both NDB and DME for bearing and distance purposes MF/UHF Located at Ground
VOR-DME VOR and DME Ground system with both the VOR and DME for radial and distance purposes VHF/UHF Located at Ground
TACAN Tactical Air Navigation Provides Aircraft bearing and distance with respect to a GND station UHF Located at Ground and Aircraft TACAN
VORTAC VOR and TACAN Ground System with both VOR and TACAN for bearing and distance purposes VHF,UHF Located at Ground VORTAC
RNAV Random Navigation or aRea Navigation Provides Aircraft bearing and distance w.r.t. 3D artificial reference position known as WPT VHF,UHF,SHF Located at Aircraft RNAV


Long Range Navigational Aids -LORAN-C, OMEGA, INS, DNS, GPS

Long
Range
System
Meaning Principle Frequency System
Location
RF Wireless
World
Reference
LORAN-C Long
Range
Navigation
Revision C
provides
Aircraft
Position Fix-2D
LF Located at Ground,Aircraft LORAN
OMEGA Optimized Method for Estimated Guidance Accuracy Provides Aircraft Position fix -2D VLF Located at Ground, Aircraft OMEGA
INS or IRS Inertial Navigation or Reference System Provides Aircraft velocity-3D and position fix-3D - Located at Aircraft INS
DNS Doppler Navigation System Provides Aircraft velocity-3D and position fix-3D SHF Located at Aircraft DNS
GPS Global Positioning System Provides Aircraft Position fix-3D UHF Located at Ground,Aircraft,Outer space GPS

Approach Landing Navigational Aids- ALS, VASIS, ILS, LOC, GS, MB, MLS, DGPS

Approach
Landing
system
Meaning Principle Frequency System
Location
RF Wireless
World
Reference
ALS Approach Landing system Provides visual Aid during landing for IFR precision Aircraft - Located at Ground
VASIS Visual Approach Slope Indicator System Provides visual aid during landing for VFR and IFR non precision Aircraft - Located at Ground
ILS Instrument Landing System Provides Aircraft guidance for straight flight path landing VHF/UHF Located at Ground,Aircraft ILS
LOC Localizer Provides horizontal guidance during ILS landing VHF located at ground,Aircraft
GS Glideslope Provides vertical guidance during ILS landing UHF located at ground,Aircraft
LOC-DME LOC and DME Ground system with both LOC and DME for horizontal guidance during ILS landing and distance purposes VHF/UHF located at ground
MB Marker Beacon Provides indication that the Aircraft is in a specific location VHF located at ground,Aircraft
OM,MM,IM Outer Marker, Middle Marker, Inner Marker Provides indication on how far the Aircraft is with respect to the runway threshold VHF located at ground,Aircraft
MLS Microwave Landing System Provides Aircraft guidance for curved or straight or segmented flight path landing SHF located at ground,Aircraft MLS
DGPS Differential GPS Ground system used to increase GPS accuracy LF/MF/UHF located at ground DGPS


What is Difference between

Difference between DME and TACAN
Difference between LDACS1 versus LDACS2
difference between FDM and OFDM
Difference between SC-FDMA and OFDM
Difference between SISO and MIMO
Difference between TDD and FDD
Difference between 802.11 standards viz.11-a,11-b,11-g and 11-n
OFDM vs OFDMA
CDMA vs GSM
Bluetooth vs zigbee
Fixed wimax vs mobile
wibro vs mobile wimax
Microcontroller vs microprocessor
FDM vs TDM
wimax vs lte


Share this page

Translate this page