| Patent Number |
Title Of Patent |
Date Issued |
| 6255982 |
Method of characterization of an overflown ground from a FM/CW radio altimeter signal |
July 3, 2001 |
| The invention proposes a novel method for using the signals provided by an airborne FM/CW radio altimeter, allowing to perform an analysis of the ground overflown by an aircraft for the purpose of, for example, identifying it, or alternatively of recognizing it. The method of the inv |
| 6191657 |
Frequency synthesizer with a phase-locked loop with multiple fractional division |
February 20, 2001 |
| A frequency synthesizer comprises a single phase-locked loop controlled by a reference clock formed by a voltage-controlled oscillator, a programmable divider with variable division rank M, a phase detector, and a loop filter. It also comprises a predetermined number n of fractional |
| 5423080 |
Microwave transceiver using the technique of multilayer printed circuits |
June 6, 1995 |
| Microwave circuits, namely the circuits relating to the transmission-reception part and to the filtering of the microwave transceiver, are mounted on one and the same multilayer printed circuit and their electromagnetic insulation comprises, firstly, elements of the printed circuit s |
| 5414466 |
Device for the correction of images from a sensor causing a periodic noise, and implementation m |
May 9, 1995 |
| The analysis of an image of the field of observation from a heat camera by bands of n lines prompts the appearance of streaks or "striping" in certain zones of the image, all these zones constituting a "striping space". The device for the implementation of the method includes means to |
| 5282082 |
Day-and-night optical observation device |
January 25, 1994 |
| A binocular-type optical device for night as well as day vision. A night vision optical device is located in a central body. The night vision optical device includes an optical path which is folded through a pair of opposed holes in a central body containing the night vision device. Two |
| 5247173 |
Device for the acquisition of the instantaneous angular position of moving means and opto-mechan |
September 21, 1993 |
| The present invention concerns device for the acquisition of the angular position of mobile means of the type including a luminous source emitting an incident beam in a known direction and a reflecting surface attached to the mobile means. The device also includes an array of elementary |
| 5239411 |
Wide-field and wide-aperture optical system, notably designed for a night channel for periscopes |
August 24, 1993 |
| The field of the disclosure is that of enlarging optical lenses and, more precisely, binocular optical systems designed to be inserted into the night-time channel of an observation system, between a light intensifier tube and an observer's eyes. The disclosure can be applied especially t |
| 5233670 |
Method and device for the real-time localization of rectilinear contours in a digitized image, n |
August 3, 1993 |
| Apparatus and method to localize rectilinear contours in a digitized image for recognizing shapes at a scene. The gradient of the gray level function of the image at the position of each pixel is determined, and those pixels which constitute a contour pixel are identified. The identified |
| 5214720 |
Image processing method for the detection of the horizon and device for the implementation there |
May 25, 1993 |
| According to the method, after a step for the digital processing of the video signal of the image analyzed by rows, there is determined, for each row, on the basis of the distribution of the mean light energy values below and above each position of the row, a step modelling function, the |
| 5212384 |
System for detecting a hot spot in an infra-red detected landscape |
May 18, 1993 |
| A system for detecting a hot spot in an infra-red detected landscape and which co-operates with a landscape scan system for converging towards an infra-red detector circuit a main beam emanating seriatim from various regions of the landscape; the system being characterized in that it |
| 5202792 |
Systems of objectives with optical athermalization |
April 13, 1993 |
| An infrared objective device with optical achromatization and athermalization comprises a front convergent assembly having at least one divergent lens acting as a port and one convergent lens, and a rear divergent assembly comprising at least one divergent lens. These three lenses ar |
| 5191346 |
Device for measuring the distance to a runway for an aerial vehicle |
March 2, 1993 |
| A device automatically measures a distance relative to the longitudinal axis of a runway to be destroyed. This device comprises: a radar transmitter-receiver, at least one depointed antenna, distance-measuring gates, a threshold circuit and a computer circuit. |
| 5149969 |
Infrared surveillance device |
September 22, 1992 |
| An infrared thermographic optical scanner is comprised of a first optomechanical device fitted with an entrance objective, at least a raster scan element, and a plane of infrared detectors on which the infrared radiation is focused in the form of lines. Further, there is provided a s |
