The method 1, further comprising calculating a ground range d1 to {TAIL ~ a nearest point} that makes {HEAD ~ the angle} of entry into the landing runway ψ zero at a current location using Equation 5: 
The method 1 , further comprising calculating a ground range d1 to { TAIL ~ a nearest point } that makes { HEAD ~ the angle } of entry into the landing runway ψ zero at a current location using Equation 5 :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH