Radio Direction Finder

This is starting to sound like "CR4 does omair's homework".

Omair

I am not sure if I got you started in this direction (direction finding) or not, but let me give you a description of the system I am familiar with. I should warn you though that this system is going obsolete.

The ELT can be totally independent of the aircraft, with the only possible connections being power (to charge the batteries in the ELT) and possibly an external antenna (on metal skinned aircraft). When the ELT is activated (by a hard landing or a crash), it transmits a signal on 121.5 MHz until it is turned off, or the batteries run down.

I have never worked a hunt from the air, but I assume that they tune their receivers to 121.5 MHz and hunt for the loudest signal. On the ground, I use a direction finding antenna (one of our products) along with a receiver and attenuator to hunt the ELT. Some people use ELPer which is a specialized receiver for this purpose only. I have never used one. You might try Googling it if you are interested.

I have no idea if this information can help you in your simulations, but it shows how we use radio direction finding in the real world.

Bill

hi bill....

FLT(elapsed timer) is nothing but a timing information of aircraft.the main problem here is the computer simulation of that not the actual flight time.

i mean to say if somebody changes a point(aircraft) with respect to a reference point.its change of angle cud be represented on a dial.