Ground RADAR (22-05-18) Flashcards
What are the features of En-route Surveillance RADAR?
Used for surveillance of airways
Longe range up to 300nm
Long wavelength and pulse length
PRF and antenna rotation are low
RADARs are all connected by land line
Primary RADAR works on 600-1200MHz
Can alter the frequency to allow you to ‘see’ rain
What are the 5 types of ground RADAR?
En-route surveillance RADAR
Terminal surveillance RADAR
Airfield surveillance RADAR
Precision approach RADAR
Airfield surface movement RADAR
What are the features of Terminal surveillance RADAR?
Medium range of 60-80nm
Used for controlling traffic inside terminal area
Primary RADAR operates at 1200-3000MHz UHF
PRF is 500Hz+
Ability to refresh target information at shorter intervals able to penetrate intervening weather
reasonable target discrimination properties
In terms of response, how does secondary RADAR differ from primary?
Primary RADAR works on reflection of targets, secondary works on response.
This means that secondary RADAR doesn’t suffer from weather clutter.
What are the features of Airfield surveillance RADAR?
Short range of 20-30nm
Can provide surveillance RADAR approach (a non precision approach)
May use either:
RAD (Basic)
Lower res; UHF; RTR of 2nm; most having an MTI using 3000, 1300 or 600MHz
Surveillance RADAR equipment
better res; higher frequency; RTR of 1/2nm
What are the features of precision approach RADAR?
Military precision approach
contains both azimuth and elevation info
operates at 9-10GHz in SHF band
very susceptible to weather clutter
RTR is 1/4nm
must be capable of detection:
range 9nm; elevation 7deg; within 10deg from centreline
Uses talk down from controller to give pilot information
What are the features of of airfield surface movement RADAR?
Used for taxiing in fog
AKA:
ASMI - Airfield surface movement indicator
GMR - Ground movement RADAR
SMR - Surfsce movement RADAR
ASDE - airfield surface detection equipment
range up to 5nm
operates at 15-17GHz (SHF)
Excellent target discrimination, can detect small to medium or large aircraft and sometimes type
What is the range and operating frequency of En-route surveillance RADAR?
up to 300nm
works at 600-1200MHz
What is the range and operating frequency of terminal surveillance RADAR?
60-80nm
1200-3000MHz
What is the range and operating frequency of airfield surveillance RADAR?
20-30nm
3000, 1300, 600MHz
What is the range and operating frequency of precision approach RADAR?
1/4nm
9-10GHz
What is the range of surveillance RADAR approach and surveillance RADAR equipment?
2nm
1/2nm
What is the range and operating frequency of airfield surface movement RADAR?
Up to 5nm
15-17GHz
