Feature navigation system and method

Details Feature navigation system and method Feature navigation system and method

1983-07-11

1987-10-13

Cangialosi, Salvatore

Boots, shoes, and leggings

364456, 364457, 342 64, G01F 1550

Patent

active

047003073

ABSTRACT:
A method of navigating an airborne vehicle using observation of linear features such as roads, railroads, rivers or the like. Maps of linear features in several discrete areas along an intended flight path are prepared and entered into an on-board computer memory. The vehicle typically uses an inertial navigation system during flight from the origin to the first mapped area. Imaging sensors and on-board processing detect linear features as the vehicle approaches or passes over them. The sensed feature pattern network is compared to the reference mapped feature network to update the inertial navigation system to generate guidance commands. Frequent updates at other mapped areas keep the vehicle on course. This system is also capable of navigation updates from single linear features when the flight path is fairly well known, and of tracking a linear feature for terminal guidance. In these cases, only a small number of feature parameters need to be stored, rather than an area map. Linear feature navigation can be used by any manned or unmanned airborne vehicle which has the on-board capability to detect the required features.

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S 20060044 (10/80) Lerche, "Onboard and Ground Test of Autonomous Navigation System Based on Terrain Correlation".
S 21110031, Optical Eng. (4/82) vol. 21, No. 2, pp. 370-375, Dron.

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