Mono pulse tracking technique is the most preferred technique which determines on the basis RETURNS PULSE rather than beam sequences such a Sequential lobing and Conical Scan.
Monday, 21 April 2014
What a Navigation
n The Traffic Alert and Collision Avoidance System (TCAS) has had
extraordinary success in reducing the risk of mid-air collisions. Now mandated on
all large transport aircraft, TCAS has been in operation for more than a decade
and has prevented several catastrophic accidents. TCAS is a unique decision
support system in the sense that it has been widely deployed (on more than
25,000 aircraft worldwide) and is continuously exposed to a high-tempo, complex
air traffic system. TCAS is the product of carefully balancing and integrating
sensor characteristics, tracker and aircraft dynamics, maneuver coordination,
operational constraints, and human factors in time-critical situations. Missed
or late threat detections can lead to collisions, and false alarms may cause pilots
to lose trust in the system and ignore alerts, underscoring the need for a robust
system design. Building on prior experience, Lincoln Laboratory recently
examined potential improvements to the TCAS algorithms and monitored
TCAS activity in the Boston area. Now the Laboratory is pursuing new collision