Studying Aircraft Takeoff & Landing in Poor Weather

Which type of sensor did you have in mind? I can't imagine this would be an easy task to perform without a sensing component of some description. Can I have more information?

What are you talking about? More info my good man.

deffinatly need more information. I am an airline pilot and i don't know what data you would want to look at without sensors.

thanks man for reply.. i got a project that needs an innovative idea about this landing and takeoff in poor weather and the implementation shuld be cheaper.. i read some published paper they were using infrared sensors for it... yeah sure they can up to a limit can keep the plane in the required limits but its not safe and it is very expensive too. i want to know one thing from you ... at how much height you can control the plane and take it back to sky if you are not allowed to land... i had got an idea about making th pilot capable of landing not the aircraft... what i thought that we can use less enegy lasers to make the runway visible to the pilot and some other stuff.... what do you think about it...

the best thing that is out for this, which is what you said, a heads up display for pilot to use, reading the infared of the runway, and landing just like it was a visual. poor weather also needs to be defined, because i think of two things, bad visiblity or thunderstorms/snow. bad visibility is usually not that large of a problem on larger commercial jets because of landing systems, most large aircraft have full autoland systems, and even the regional jets can do what is called a CAT II which brings them down to around 100' above the runway. thunderstorms and even snow storms are a lot diffrent, because now you are not looking at stable air. as far as being able to do a go around you can do that at about any altitude, a lot of aircraft will even touch the wheels on the ground in a go around situation if the visibility is too low.

I think differential GPS can locate a receiver with good precision relative to another reciever on the order of several centimeters.
Have a look: Stanford GPS lab

Define sensor?

can you elaborate it....

Wikipedia is not very enlightening on this one. I'm not so sure either. It looks like two possibilities-

• You have a GPS receiver and get a position based on the timestamps of the signals you receive from different satelites in the GPS constellation and a DGPS station near you broadcasts a correction signal based on the difference between it's GPS derived location and it's actual location, well defined by other means.
• You've got a GPS receiver that determines it's position from the constellation, the ground station has the same, and broadcasts that position, or possibly the timestamps that it uses to derive that position. Your DGPS unit calculates a position relative to the ground station of useful accuracy.
  Somebody better tell me which one is right. I've heard about centimeter accuracy for DGPS, but that bundle of aviation week didn't make the last two moves.