American Airlines and Qatar Airways are expanding their strategic alliance with a new codeshare agreement, enabling American’s customers to book travel on Qatar Airways flights via Doha to and from 16 new countries. Airlines expand codeshare agreement to 16 additional countries FORT WORTH, Texas, and DOHA, Qatar — American Airlines and Qatar Airways are expanding their strategic alliance with a new codeshare agreement, enabling American’s customers to book travel on Qatar Airways flights via Doha

The Radar stands for Radio Detection and Ranging. It is having been in use since World War II and is currently an integral part of civilian aviation across the globe. There are two types of airport radar systems: primary and secondary. The radar operation principle The radar uses the pulse technique, whereby radio waves are transmitted in very short bursts. These bursts are known as pulses. The duration of each pulse is called pulse width/length. As these