Passive navigation using image irradiance tracking

P. MENON, B. SRIDHAR
1989 Guidance, Navigation and Control Conference   unpublished
Rotorcraft operating at low altitudes require navigational schemes for detecting terrain and obstacles. of Rotorcraft,
doi:10.2514/6.1989-3500 fatcat:a7hhjcvpgjclxpngci6ldj3icm