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| Number | Title | Issue Date |
| 7340277 | Adaptive antenna for controlling the weighting on a plurality of antenna elements An optical subscriber system according to the present invention has an adaptive antenna having a plurality of antenna elements, for controlling the weighting on the antenna elements thereby to radiate beams that are adapted to radio wave environments, a position est... | 03/04/2008 |
| 7324040 | Method of automatically setting the gain of an interrogator receiver within a non-contacting identification system An attack is activated in a receiver amplifier of an interrogator whenever an amplified input signal exceeds an attack threshold voltage value Vatt, and the receiver amplifier at least during a waiting period, the length of which preferrably equals the double length... | 01/29/2008 |
| 7286077 | Method and device for aiding the landing of an aircraft on a runway A system for aiding the landing of an aircraft on a runway uses an angular vertical position of the aircraft and includes at least one landing aid radio. In a stand-alone manner, the position of the aircraft in latitude and longitude is determined, and the position ... | 10/23/2007 |
| 7280848 | Active array antenna and system for beamforming An active antenna array for use in a beamforming antenna system. The antenna array includes multicarrier power amplifiers coupled to each antenna element wherein the outputs of the multicarrier power amplifiers are linearized. The antenna array communicates with a b... | 10/09/2007 |
| 7203688 | Analysing tactical data link messages A method of analyzing data link messages is disclosed. These messages include a message type field and at least one message content field whose meaning is determined by the message type. The method includes storing the plurality of data link messages in a database. ... | 04/10/2007 |
| 7196654 | Vehicle positioning and tracking radar system A vehicle positioning and tracking radar system includes a rotating antenna with a pair of spatially separated transmit feeds for simultaneously transmitting a pair of frequency-modulated continuous-wave (FMCW) electromagnetic signals having a first polarisation and... | 03/27/2007 |
| 7109914 | Switching method and device on an aircraft radiofrequency landing system A method and device for carrying out switchover on a radio frequency landing system of an aircraft between a first input of a radio frequency receiver, which input is connected to a first antenna disposed on a lower part of the aircraft and receives a first signal, ... | 09/19/2006 |
| 7053838 | Antenna structure and installation An antenna system installation comprising a tower/support structure, and an antenna structure mounted at the top of said tower/support structure, said antenna structure comprises a plurality of antenna elements, a plurality of power amplifiers, each power amplifier ... | 05/30/2006 |
| 7038613 | Method and device for determining at least one cue of vertical position of an aircraft A method and device for determining a vertical position cue of an aircraft while landing in the presence of a lateral alignment beam, which is emitted from the ground and provides an indication of the aircraft's lateral alignment with respect to a landing strip, may... | 05/02/2006 |
| 7020218 | Sliding-window transform with integrated windowing A system for a sliding-window transform with integrated windowing is described. The system provides a Direct Fourier Transform kernel with an integrated windowing filter having a desired number of stages. In one embodiment, the windowing filter is a lowpass filter. ... | 03/28/2006 |
| 6972622 | Optimization of error loops in distributed power amplifiers Several feed-forward RF power amplifiers configured for use in a distributed array, each having a main amplifier within a carrier null loop and an error amplifier within an error loop. Each carrier null loop includes a switch configured to selectively disable the ca... | 12/06/2005 |
| 6950036 | Station identification for a local area augmentation system on a visual display An aircraft on-board system for communicating with a ground-based radio transmitter forming a part of a Local Area Augmentation System for aiding in the navigation and landing of the aircraft, comprising a radio receiver adapted to receive signals, including identif... | 09/27/2005 |
| 6906681 | Multicarrier distributed active antenna A distributed active antenna includes a power module having a parallel combination of power amplifiers for driving each antenna element of the distributed active antenna. A predistortion linearization circuit may be coupled to each power module to linearize the outp... | 06/14/2005 |
| 6844855 | Aircraft phased array antenna structure including adjacently supported equipment An aircraft phased array antenna system has transmit and receive antenna structures externally mounted on the aircraft fuselage. Each antenna comprises a plurality of phased array elements and antenna power and support equipment. Aerodynamically shaping antenna stru... | 01/18/2005 |
| 6600442 | Precision approach radar system having computer generated pilot instructions A computer generated pilot instruction system for providing spatial information to a pilot corresponding to the difference between the actual landing fight path and optimal landing flight path.... | 07/29/2003 |
| 6469655 | Surveillance system for terrestrial navigational and airport landing systems The invention deals with a surveillance system for terrestrial navigational and landing systems, in which the navigational signals being transmitted for aeroplanes or other airborne objects by the navigational and airport landing systems are received and ... | 10/22/2002 |
| 6359583 | Ground based millimeter wave imaging system System and methods for a ground based millimeter wave imaging system that provides real-time millimeter wave images of an airport to one or more aircraft from one or more ground stations (18). The system includes at least one millimeter wave transceiver (... | 03/19/2002 |
| 6181271 | Target locating system and approach guidance system The invention comprises a mulli-wave radar system for obtaining first target position information of a flying object by capturing and tracking the flying object from a maximum detection distance, a stereo-camera system for taking over the tracking of the ... | 01/30/2001 |
| 5955971 | Window-passage detection system of an airplane A window-passage detection system has a ground system comprising: a first course generator (3) for generating a horizontal DDM (Differential Depth of Modulation) pattern for defining a horizontal width (25) of a virtual window frame by emitting a first ca... | 09/21/1999 |
| 5838276 | Microwave energy implemented aircraft landing system A microwave radio frequency landing system includes an aircraft borne transmitter/receiver (transceiver) and a ground unit. The ground unit comprises a dielectric material lens and a transponder module array. The transceiver transmits pulsed interrogation... | 11/17/1998 |
| 5592131 | System and method for modulating a carrier frequency A carrier frequency modulating system and method for producing a modulated carrier frequency is disclosed. The system comprises a carrier frequency signal generator for producing a carrier frequency signal at a carrier frequency at an output thereof. The ... | 01/07/1997 |
| 5512900 | Aircraft landing systems An MLS system comprising ground based equipment which includes a microwave signal transmitter arranged to feed microwave signals to radiator elements of an array antenna via phase shifter modules one of which is provided for each of the said elements, whe... | 04/30/1996 |
| 5501724 | Coating composition for attenuating reflection of electromagnetic radiation A coating composition for the attenuation of the reflection electromagnetic radiation and particularly electromagnetic radiation have a wavelength of greater than 800 nm including the near infrared is described. The composition comprises a chromophore cap... | 03/26/1996 |
| 5351077 | Microwave aircraft landing system using narrow bandwidth filtering A microwave locating system is provided for locating known features and distinguishing between different types of features. The locating system includes a plurality of modulated microwave power sources located on known features and radiating modulated mic... | 09/27/1994 |
| 5254998 | Executive monitor for microwave landing system A method and means for monitoring a Microwave Landing System (MLS) that provides statistical independence of the monitoring process from the MLS to insure the integrity of the MLS signal format. The r.f. signal transmissions are received by a monitor rece... | 10/19/1993 |
| 5248983 | Transmitting station for a position locating system, particularly for the microwave landing system, and methods for monitoring and controlling such a transmitting station In contrast with conventional transmitting stations for a position locating system in which the main equipment and the standby equipment operate alternately and are monitored by checking the transmitted signal received from external sensors, the present i... | 09/28/1993 |
| 5229776 | Method for field monitoring of a phased array microwave landing system far field antenna pattern employing a near field correction technique A method for obtaining the far field pattern of a phased array MLS antenna using measurements by a monitor located in the near field of the MLS antenna. The near field pattern differs from the far field pattern because of the presence of phase error terms... | 07/20/1993 |
| 5218360 | Millimeter-wave aircraft landing and taxing system Apparatus, and a corresponding method, for generating navigational data to aid a pilot in landing or taxiing an aircraft in poor visibility conditions. Radio-frequency (rf) beacons at predetermined locations around an airport runway or taxiway are separat... | 06/08/1993 |
| 5142287 | Technique for demodulating and decoding MLS DPSK transmissions using a digital signal processor A system for demodulating and decoding differential phase shift keying (DPSK) transmissions utilizes a bandpass filter, an analog to digital converter and a digital signal processor. Removal of the effects of unknown frequency component is achieved by app... | 08/25/1992 |
| 5101207 | MLS-type landing system with centralized means of surveillance It describes a Microwave Landing System wherein. The means for surveillance of the transmissions from the various MLS stations are centralized in a single central station which then commands the various MLS stations. The connection between the central station ... | 03/31/1992 |
| 5097266 | MLS-type landing system with centralized microwave generation The system comprises a central station assuring the generation of the microwave signals which must be transmitted by the different stations of an MLS. The signals thus generated in a centralized way are distributed to the different stations via an optical... | 03/17/1992 |
| 5032840 | Method of receiving pulses of the M.L.S. type and system for implementing this method A method of receiving pulses of the M.L.S. type and a system for implementing this method. The method comprises a dividing stage for dividing the received pulse into zones (Z1, . . . Z8). A mean value is determined of the samples within each zone in order... | 07/16/1991 |
| 5022751 | Portable localizer siting system A portable siting system particularly useful for siting a portable localizer for a collocated approach guidance system for aircraft utilizes a laser range finder in conjunction with a shaft encoder to determine the distance between the localizer and two a... | 06/11/1991 |
| 4990921 | Multi-mode microwave landing system A guidance system for landing an aircraft is described which uses a source of signals identifiable with the aircraft and a ground station which is linked to the aircraft. Specifically, the ground station includes a receiver which is connected to one or mo... | 02/05/1991 |
| 4916451 | Microwave landing system Field monitor antenna is located to receive reciprocally scanned guidance beams. A pair of test pulses having a time interval which is determined by the field monitor antenna location are generated from a test pulse generator during a dead time period of ... | 04/10/1990 |
| 4912479 | Microwave landing system There is disclosed a microwave landing system wherein there are provided at least two means which are spaced by a predetermined distance and from two of which beams radiate alternately to scan a predetermined region vertically and horizontally. In the mic... | 03/27/1990 |
| 4890110 | Microwave landing system A microwave landing system in which a beam scanning antenna is provided with an amplifying function to constitute an active array, a traditional power amplifier and the like are omitted to enhance the reliability of operation. The outputs of phase shifter... | 12/26/1989 |
| 4823127 | Automatic, real-time fault monitor verifying network in a microwave landing system The fault monitoring function of an executive monitor contained in a microwave landing system is verified by evaluating a history of the parametric information sampled by an executive monitor and storing in memory the number of out of tolerance parametric... | 04/18/1989 |
| 4806932 | Radar-optical transponding system An airport landing system includes an airborne transmitter and receiver for transmitting RF energy at a first frequency and receiving RF energy at a second frequency. A stationary RF energy focusing means for focusing received RF energy. At least four rec... | 02/21/1989 |
| 4783134 | Microwave holograph device In a microwave holographic device, the main lobe of a microwave antenna is spatially scanned to receive a microwave signal reflected from an object. The received microwave signal is mixed with a reference signal to generate two-dimensional electric inform... | 11/08/1988 |
