Bizarre Patents
A new toilet tank assembly aquarium for housing aquatic creatures.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7426386 | Beam laydown for hopped satellite downlink with adaptable duty cycle A power gated variable hop cycle beam laydown (700) manifests itself as first cells (C, D) supported by a first hop cycle, second cells (G, H) supported by a second hop cycle, and transition cells (E, F) supported by a transition hop cycle. The transition hop... | 09/16/2008 |
| 7184763 | VHF ground station selection algorithm An apparatus, method and computer program for initiating and maintaining a virtual connection between a mobile radio and a ground station, including receiving a plurality of ground station radio signals from a mobile radio; accumulating over a time period signal qua... | 02/27/2007 |
| 6965343 | System and method for antenna tracking A method for antenna tracking includes providing a central feed element in an antenna focal region with additional feed elements in an azimuth coordinate to provide a multitude of feed elements that each have a static beam position, and varying ratios of amplitudes ... | 11/15/2005 |
| 6924765 | Microstrip patch array antenna for suppressing side lobes A microstrip patch array antenna suppressing side lobes. The microstrip patch array antenna have a plurality of antenna array elements on two-dimensional planar having A axis and B axis for suppressing side lobes, wherein the antenna array elements are linearly arra... | 08/02/2005 |
| 5635941 | Method and apparatus for feeding over-modulated message signals to antennas of an antenna array A feeding method and device, particularly for a Doppler VOR system, and to a Doppler VOR system using such a feeding device. The feeding method performs a blending function, which is an approximation of the sinX/X function limitedly to the three central l... | 06/03/1997 |
| 5570097 | Retransmitted GPS interferometric system A retransmitted Ground Positioning System (GPS) using retransmission of a GPS signal in combination with an interferometer for determining the angular deviations of an aircraft relative to a landing site in both vertical and horizontal planes, by using th... | 10/29/1996 |
| 5359334 | X-scan aircraft location systems Linear array antenna systems are used in X-scan aircraft location systems and methods able to avoid disabling azimuth error conditions caused by multipath reflections under roll and pitch conditions during aircraft carrier landing operations. Aircraft azi... | 10/25/1994 |
| 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 |
| 5247311 | Loro antenna and pulse pattern detection system A passive surveillance method and system, capable of operation in conjunction with both non synchronous and synchronous pulse pattern rotating ground radars. Received signal scan modulated pulses are deinterleaved and correlated with a previously selected... | 09/21/1993 |
| 5177491 | Navigation receiver with beam asymmetry immunity Airborne navigation receivers are designed to derive navigation information with accuracy immune to beam asymmetry errors. Scanned navigation beams of the Microwave Landing System are subject to asymmetry causing beam center measurement errors at power le... | 01/05/1993 |
| 5134416 | Scanning antenna having multipath resistance The object of this invention is to reduce the adverse system performance effects resulting from antenna pattern sidelobes. It has particular application to the time reference scanning beam of the international microwave landing system (MLS) where sidelobe... | 07/28/1992 |
| 5132692 | Method and means for switchover from primary equipment to standby equipment in a microwave landing system In a Microwave Landing System (MLS) transmitting landing guidance signals and data signals according to a time division multiplex signal format, a method and means for replacing faulty primary equipment with standby equipment. Redundant electronics units ... | 07/21/1992 |
| 5130716 | Apparatus for and method of monitoring a navigation system Microwave landing systems are used to enable aircraft to make landings even in poor visibility. One distinguishes three categories of approach and landing manoeuvers. Of particular importance are Category III operations, i.e., those in which the pilot dep... | 07/14/1992 |
| 5103233 | Radar system with elevation-responsive PRF control, beam multiplex control, and pulse integration control responsive to azimuth angle A multipurpose system provides radar surveillance for air traffic control purposes. The system includes four separate active phased-array antennas, each with &#b1;45° coverage in azimuth, from 0° to 60° in elevation. Each antenna element of each phased... | 04/07/1992 |
| 4968982 | Aircraft landing system having simplified out-of-coverage indication (OCI) In the ground-based equipment of a microwave landing system (MLS), a linear array antenna is employed to generate both a scanning guidance beam, which provides azimuthal position data to an incoming aircraft, and a pair of out-of-coverage indication (OCI)... | 11/06/1990 |
| 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 |
| 4899160 | Guidance equipment for microwave landing system Guidance equipment for a microwave landing system has an azimuth guidance device and an elevation guidance device for providing angle information constructed into a single assembly. The selective formation of an azimuth scanning beam and an elevation scan... | 02/06/1990 |
| 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 |
| 4837580 | Microwave landing system with fail-soft switching of dual transmitters, beam steering and sector antennas An MLS system having redundant subsystems. Dual signal sources feed dual power dividers. A first switch array selects the power divider to be used and provides the selected signals to an array of phase shifters. A second switch array provides the phase sh... | 06/06/1989 |
| 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 |
| 4819000 | Scanning antenna having amplitude and phase distribution diversity A scanning beam transmit antenna system includes a source of electromagnetic energy, radiating elements and a feed network connecting the source to the radiating elements. A beam steerer controls the phase of the electromagnetic energy at each of the radi... | 04/04/1989 |
| 4794543 | Multi level split gate signal processor determining the centroid of a signal Successive MLS scanning signals are received as pulse-type analog signals and converted into corresponding digital signals. The centroid of each digital signal is determined at at least two different levels below the peak of the digital signal. The centro... | 12/27/1988 |
| 4789864 | Low elevation guidance system A guidance system for aircraft wherein a radio antenna on the ground transmits a beam that sweeps across an aircraft and the aircraft receives the beam and utilizes its amplitude waveform in determining the location of the aircraft from the station. At lo... | 12/06/1988 |
| 4764772 | Scanning-beam microwave landing system In the basic configuration of the microwave landing system, an azimuth station (2) and an elevation station (1) are interconnected by a data link for transferring data and sync signals, and each of the stations includes a monitoring facility (10, 15; 3, 8... | 08/16/1988 |
| 4757316 | Method and device for monitoring a station of a landing aid system of the MLS type A method and device for monitoring a station in a landing aid system of the MLS type comprising two transmission assemblies. Transmission from the electronic sweep antenna is provided alternately by said two transmission assemblies, the operation thereof ... | 07/12/1988 |
| 4723126 | Microwave landing system for use on a back course approach The invention provides independent guidance and monitoring integrated into an MLS landing system and a scaled-down MLS take-off or missed approach guidance system useable at small airports. An added fixed beam precision guidance system is integrated into ... | 02/02/1988 |
| 4670756 | Phase shifter control A scanning system for a phased array antenna for operation at a selected frequency between a first frequency and a second frequency includes the storage of phase shift command signals for each of the phase shifters coupled to radiating elements of the ant... | 06/02/1987 |
| 4635064 | Microwave landing system The invention provides independent guidance and monitoring to be integrated into an MLS landing system and also provides a scaled-down MLS landing guidance system useable at small airports. In both cases an added fixed beam precision guidance system is in... | 01/06/1987 |
| 4568942 | Microwave landing system with separate elevation bearing stations The invention relates to a microwave landing system or MLS in which the bearing station and elevation station are geographically separated by a distance which can be several kilometers. Each of the elevation and bearing stations transmits a message consti... | 02/04/1986 |
| 4489326 | Time reference scanning beam microwave landing system The disclosure teaches a method, and an apparatus for carrying out the method, for determining the time between TO and FRO received waveforms from the time reference scanning beam (TRSB) of a microwave landing system (MLS). In accordance with the inventio... | 12/18/1984 |
| 4485384 | Microwave system The new invention is a description of a double sideband commutated Doppler microwave system for landing aircraft or spacecraft. It is capable of providing angular information in elevation and azimuth by the measurement of a Doppler frequency in an airborn... | 11/27/1984 |
| 4358768 | Radio direction finder A radio direction finder for obtaining the bearing of a transmitter with respect to a receiver comprises a multi-element receiving antenna, two separate scanning means coupled to said antenna for simultaneously generating a rightward and a leftward rotati... | 11/09/1982 |
| 4333081 | Monitoring system for scanning-beam microwave landing apparatus Monitoring apparatus for a time reference scanning-beam microwave landing system which supplies directional information throughout a 40° to 60° landing approach sector. Several transponders are provided within the radiation field of the directional ante... | 06/01/1982 |
| 4306239 | Microwave landing systems A system of operation for a scanning beam microwave landing system having aerial means for scanning a narrow microwave beam TO and FRO through a scanned angular sector and for transmitting OCI signals with a relatively wider beam pattern to cover OCI sect... | 12/15/1981 |
| 4306238 | Microwave landing systems A system of operation for a scanning beam microwave landing system having aerial means for scanning a narrow microwave beam TO and FRO through a scanned angular sector and for transmitting signals with relatively wider beam patterns to cover sectors to th... | 12/15/1981 |
| 4193075 | Low angle elevation guidance system A system for providing aircraft guidance at elevation angles less than the transmitting antenna beamwidth.... | 03/11/1980 |
| 4186398 | Modulation of scanning radio beams Complex modulation--that is, amplitude and phase modulation--is used to provide smaller beamwidth and better angular resolution of a scanning radio beam generated by a commutatively switched aerial. The way in which the modulation pattern may be determine... | 01/29/1980 |
| 4178581 | Integrated antenna aperture A microwave landing system employing a phased array antenna for the generation of narrow, scanning guidance beams in which broad beam antennas used for transmitting identification signals, fly-left, fly-right guidance signals and the like with broad cover... | 12/11/1979 |
| 4134116 | Monitoring commutated scanning radio beams Determination of the pointing accuracy of a commutated scanning beam aerial is effected by monitoring the phase of the signal received at a point where, at all times during its operation, a field is established by the aerial. The phase of the sampled sign... | 01/09/1979 |
| 4131890 | Spectral analysis An improved method of spectral analysis suitable for use in microwave landing systems comprising sampling an unknown signal whereby nulls associated with a Sin x/x distribution are identified to facilitate the identification of a wanted signal.... | 12/26/1978 |
