Author: Wg Cdr Rajagopal

Ground Radar Types of Primary Ground Radars Ground based Primary Radars are used in Air Traffic Control Area Surveillance Radar (RSR) En-route Surveillance Radar (Same as RSR) Terminal Surveillance Radar (TSR) Aerodrome Surveillance Radar (ASR) Precision Surveillance Radar (PAR) Aerodrome Surveillance Detection Equipment (ADSE) Airport Surface Movement Radar (Same as ASDE) Area (En-route) Surveillance Radar (RSR) Area Surveillance Radars are long-range radars Used by Area Control Centre (ACC) for monitoring air routes Frequency: 600 – 3000 MHz Wavelength: 10 – 50 Cm PRF: 250 PPS Pulse Length: 2 – 4…

Radar Primary Radar Primary Pulse Radar operates on Bearing by Search light principle and Range by echo principle Pulse Radar transmits and receives the reflected pulses from a target using the same radar antenna Direction of the target is obtained by calculating the direction from where pulse is reflected The time delay for the pulse to go up to the target and return to the radar is converted into range of the target in pulse radar Primary Continuous wave radar transmits and receives its reflected continuous wave transmission Range of…

Microwave Landing System Introduction to Microwave Landing System (MLS) MLS is an economical precision landing aid in SHF band frequencies between 5031.0 to 5090.7 MHz with a built in DME Emission designator for MLS is N0X that indicates modulated carrier and data transmission MLS includes Azimuth guidance, Elevation guidance, Distance measuring equipment, Missed approach system and Flare sub systems MLS can be used in hilly terrain due to lack of site errors MLS operates up to 200 channels in SHF band the system is not affected by civilian FM transmissions…