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| Number | Title | Issue Date |
| 4602336 | Guidance systems A guidance method which enables a moving body to be guided to a predetermined location by allowing the body to view its surroundings and to compare the viewed scene with a reference pattern stored on the body. A number of individual reference patterns are... | 07/22/1986 |
| 4584646 | System for correlation and recognition of terrain elevation In a dead reckoning navigation system a correlation scheme that operates in the frequency domain (using a discrete cosine transform (DCT) function) is implemented separately from the navigation system to determine a two-dimensional position error estimate... | 04/22/1986 |
| 4514733 | Control system for aircraft A terrain-contour-matching guidance method is disclosed in which topographic reference data are made to include the same systematic errors which altitude measurement of an unmanned flight is expected to produce. Speed/course and general flight path tracki... | 04/30/1985 |
| 4495580 | Navigation system Apparatus for determining the position and velocity of a vehicle over a given area as represented by stored data includes a radar terrain sensor responding to radar pulse returns and generating video signals to a terrain clearance estimator. Also input to... | 01/22/1985 |
| 4494200 | Process and apparatus for fixing the position of a moving vehicle on a map For fixing the position of a moving vehicle, typically an aircraft, a map of a strip of ground along the theoretical path of the vehicle is prepared. The map has two parts. The transparency i at each point of one part is in direct relation with the value ... | 01/15/1985 |
| 4490719 | Polarization controlled map matcher missile guidance system A reference grid for a map matching missile guidance system is generated from a vertically polarized radar map and a horizontally polarized radar map, both of which represent radar returns from a preselected ground area. In generating this reference grid,... | 12/25/1984 |
| 4398195 | Method of and apparatus for guiding agricultural aircraft A microprocessor controls a radar trilateralization system, used on board an aircraft to provide pattern flying. A suitable hard wired board may be added to the microprocessor to enable it to read out any suitable flight pattern. A plurality of transponde... | 08/09/1983 |
| 4396903 | Electro-optical system for correlating and integrating image data from frame-to-frame An electro-optical system which integrates the image pattern information, extracted from a plurality of image frames and identified as belonging to a common candidate object, to form a composite image pattern of the candidate object which may be accuratel... | 08/02/1983 |
| 4386355 | System for determining the location of an airborne vehicle to the earth using a satellite-base signal source A satellite in geosynchronous orbit includes a source of signal illumination which is directed toward the earth, covering a given area thereof. An airborne vehicle, such as a missile, traveling over the area covered by the signal illumination from the sat... | 05/31/1983 |
| 4347511 | Precision navigation apparatus In the disclosed apparatus, a reference image sensor continuously scans a lmed atlas of images representing terrain being overflown while a second sensor simultaneously scans the terrain. A correlator compares the signal and the reference image sensor des... | 08/31/1982 |
| 4179693 | Autonomous, check-pointing, navigational system for an airborne vehicle An autonomous navigational system for an airborne vehicle is disclosed which automatically updates its position and heading coordinates at each of a plurality of checkpoints along a preselected flight path. Prestored in a memory of the navigational system... | 12/18/1979 |
| 4175285 | Navigational system of high-speed aircraft Navigational system for the guidance of automatically piloted aircraft during high-speed (e.g. supersonic) overland flights, the predetermined course of the aircraft including a series of spaced-apart measuring zones registered on a progressively displace... | 11/20/1979 |
| 4164728 | Correlation techniques In a correlation system, such as may be used in an autolock follow arrangement, the correlation is effected on the basis of line integrals of data relating to pictures of substantially the same scene obtained at different times. The formation of line inte... | 08/14/1979 |
| 4119968 | Microwave correlator A microwave correlator utilizing holographic techniques and operating in a spectral region of small weather effects using passive radiometric sensing in which a phase hologram of an area to be flown over is stored in a computer aboard an aircraft and the ... | 10/10/1978 |
| 4019179 | Method of locating persons in distress A method for locating any person in distress in a selected area on the surface of the earth who has deployed passive radio frequency (RF) reflectors in a predetermined arrangement. A first transparency is made in the spatial frequency domain of an image o... | 04/19/1977 |
| 3992707 | Reproduction of a field of view as scanned by a remote controlled aircraft The field-of-view is line-scanned transverse to movement of a vehicle such as an aircraft and the line scan signal is transmitted to a ground station in which a frame is assembled on a line for line basis with updating by each new scanning line to obtain ... | 11/16/1976 |
| 3974328 | Line scan area signature detection system An area signature detection system arranged to receive an output from a sensor operative in the electromagnetic spectrum, where the output from the sensor is an amplitude varying electrical signal representing the field-of-view beheld by the sensor, and t... | 08/10/1976 |
| 3952299 | Data line correlator A line correlator for use as a pattern matching device in a high resolution radar system. Binary coded a priori target area information is digitally correlated with binary coded video range trace signals for a plurality of range and azimuth sets in parall... | 04/20/1976 |
