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| Number | Title | Issue Date |
| 6452536 | Antenna system A method for scheduling radar transmissions for a phased array antenna system having at least two antenna faces, in which each respective antenna face is configured to receive echoes of possible targets corresponding to previous radar transmissions by the... | 09/17/2002 |
| 6253697 | Ship provided with a distortion sensor and distortion sensor arrangement for measuring the distortion of a ship An improved ship which incorporates a distortion sensor arrangement. Measurement data supplied by the distortion sensor arrangement is preferably used to correct measurement data supplied by and/or control signals for an on-board directional apparatus. Th... | 07/03/2001 |
| 6233820 | Method for manufacturing of a multilayer microwave board and boards obtained on the basis of this method Method for manufacturing a multilayer microwave board in one operation. Individually etched layers of a laminate, such as duroid, are bonded to form a package and drilled after which the resulting holes are plated. Next, the superfluous connections are re... | 05/22/2001 |
| 6229999 | Receiver system The invention relates to a receiver system for the reception of a series of ultrashort, pulsed electromagnetic signals. Signals of this type usually require an extremely fast-acting receiver, necessarily situated in close proximity to the antenna. Accordi... | 05/08/2001 |
| 6186397 | Method for operating a fire-control system based on a heuristic algorithm A method of operating a fire-control system for simultaneously engaging a plurality of threats in which one plan from a pool of heuristically determined feasible plans is selected based on an environment of the fire-control system and a selected criterion... | 02/13/2001 |
| 6175330 | Array antenna and method for operating an array antenna Array antenna of the monopulse type for realizing, on the basis of at least two groups of radiators, of at least two receiving beams for obtaining a difference signal. According to the invention, the at least two groups are homogeneously distributed withi... | 01/16/2001 |
| 6140962 | Antenna system A multiface phased array antenna, with each antenna face being provided with a plurality of T/R modules. To preclude the occurrence of crosstalk among the different antenna faces, caused by the steep edges of transmitted RF pulses, these pulses are delaye... | 10/31/2000 |
| 6115002 | Array of radiating elements The invention comprises an array of radiating elements (1) to be used as a module in a phased-array radar antenna, the radiating elements consisting of waveguides of rectangular section. The radiating elements are disposed on a common surface (2), which c... | 09/05/2000 |
| 6100844 | Radar apparatus with sidelobe blanking circuit A radar apparatus provided with a sidelobe blanking circuit. The apparatus includes a directive antenna with a main receiver, and an auxiliary antenna with an auxiliary receiver. The apparatus also has a differential antenna with a differential receiver. ... | 08/08/2000 |
| 6091360 | Antenna system The invention relates to a multi-face phased array antenna. To prevent crosstalk between the individual faces, each face comprises two cancellers, each of which cancels the crosstalk from an adjacent face. To this end, each canceller receives a reference ... | 07/18/2000 |
| 6037896 | Method for determining an impact point of a fired projectile relative to the target The method of determining an impact point of a fired projectile relative to a target. The target is first tracked with the first beam. In the meantime, a second beam is directed above the target and waits for the projectile to be situated within the beam.... | 03/14/2000 |
| 6031605 | Arrangement for the detection of targets The invention relates to an arrangement for detecting approaching high-velocity targets using rotatable optical detectors (2, 3) of the line array type. With a view to the suppression of false alarms, the arrangement moreover comprises a hollow rotation a... | 02/29/2000 |
| 6023123 | Acoustic vibration generator The invention relates to an arrangement for generating sound waves or anti-sound waves. For the sound waves. For the sound wave transducer, use can be made of window glass (1) or other types of transparent material, which is set into vibration by means of... | 02/08/2000 |
| 5977930 | Phased array antenna provided with a calibration network A phased array antenna including a number of waveguide radiators in a power supply system. A calibration network provides a test pulse. By directly connecting the calibration network to the waveguide radiators, a more accurate calibration is obtained due ... | 11/02/1999 |
| 5943004 | Method for the transmission of radar transmitter pulses The invention relates to a method for realizing a radar transmission for a high-resolution radar. According to the method, a number of groups of pulses is transmitted with incremental frequencies, each group also comprising a number of pulses with increme... | 08/24/1999 |
| 5920027 | Fire control system A fire control system and a method for estimating periodic component of a target path. An efficient, fast-setting estimator is realized by first estimating the period and then the amplitude of the periodic component on the basis of the most recent measure... | 07/06/1999 |
| 5917456 | Stripline antenna The invention relates to an antenna in stripline technology, in which the dipoles and the feeder network are etched in one single process. The connections of the dipoles are realized as two-wire transmission lines, fed by Schiffman couplers. The polarizat... | 06/29/1999 |
| 5877855 | Arrangement for the detection of targets An arrangement for detecting targets with an infrared sensor. The number of false alarms can be reduced by comparing image matrices generated by a detector in one revolution on the basis of pre-alarms generated in the image matrices by point target extrac... | 03/02/1999 |
| 5862274 | Apparatus for the assessment of damage to a ship A low cost and rugged apparatus for assessing damage to a ship's hull. Parallel optical fibers run along the ship's hull. If damage occurs, the fibers are broken and the breaks are detected by a centrally located unit. The location and extent of damage ca... | 01/19/1999 |
| 5832855 | Ship's hull A ship's hull including a first hull part arranged as a hard-chine-hull disposed on a second hull part in the shape of a super-slender float. During in service conditions, only the aft half of the first hull part intersects the water surface so that two s... | 11/10/1998 |
| 5805109 | Antenna system The invention relates to a phased array antenna by means of which, besides normal radar transmissions, also a guidance of a number of semi-active homing missiles towards a number of targets can be effected. The main problem to be solved here is that a rea... | 09/08/1998 |
| 5798729 | Radar apparatus A radar apparatus provided with a transmitting unit, antenna unit and a receiver unit. The transmitting unit transmits pulses having a modulation for enabling pulse compression on reception. As an ECCM feature, the radar apparatus is further provided with... | 08/25/1998 |
| 5790067 | Jam-resistant radar apparatus with phase shift provisions Radar apparatus provided with a transmitting unit (1), having a transmit phase shifter for providing each transmitted pulse in a burst with a selected phase shift, and a receiving unit (7), having a receive phase shifter (9) for cancelling the selected ph... | 08/04/1998 |
| 5753915 | Arrangement and method for the detection of targets The invention relates to an arrangement and a method for suppressing spurious targets, particularly those caused by birds, in an infrared search device. Potential targets that show comparatively strong fluctuations are qualified as spurious targets. Only ... | 05/19/1998 |
| 5736966 | Adjustable microwave antenna The invention relates to a microwave antenna for the generation of a beam with adjustable parameters. Use is made of a reflective Fresnel zone plate that is written into a thin layer of silicon by means of a laser plus deflection means. A reflector is pos... | 04/07/1998 |
| 5731780 | Radar system Radar system for the generation of two-dimensional or three-dimensional position indications of targets. Three-dimensional position indications are obtained by periodically canting the antenna about a canting axis, such that the antenna beam plane makes a... | 03/24/1998 |
| 5724012 | Transmission-line network Transmission-line network of the foam stripline type. To reduce dielectric losses in the foam, part of the foam in the region of the stripline is removed so that the wave properties of the transmission-line network are not impaired. The removed foam forms... | 03/03/1998 |
| 5708437 | Radar apparatus A radar apparatus having a phased array antenna with a large number of transmit and receive modules, a control unit and a video processor. The control unit generates a number of pulse bursts per azimuth-elevation direction, all of which shows slight carri... | 01/13/1998 |
| 5708444 | Multipatch antenna with ease of manufacture and large bandwidth A multipatch antenna including radiating patches (2) positioned on a dielectric sheet (1). The patches (2) are capacitively fed by probes (7) ending in the dielectric sheet (1) near the patches (2). By positioning the probes (7) near selected edges of the... | 01/13/1998 |
| 5640157 | Information system for a ship The invention relates to an information system for a ship (1), and in particular for providing information about the position of ship's crew members when a calamity occurs. For that purpose the ship's crew members are provided with an identification means... | 06/17/1997 |
| 5629516 | Optical scanning apparatus with the rotation of array into two directions An optical scanning apparatus having a linear detector array and a lens for focusing an image on the array contained within a camera housing. The housing can be rotated around a first axis so as to scan from side to side. In addition, the linear detector ... | 05/13/1997 |
| 5627545 | Radar apparatus The invention relates to a radar apparatus (1, 2, 3) provided with a doppler filterbank (4) and fast thresholds (5.i), for writing per pulse a range-doppler matrix in range-doppler memory (6) and the background level in background memory (7). By unfolding... | 05/06/1997 |
| 5590534 | Stirling cooler The invention relates to a Stirling cooler, comprising a compressor for generating a time-varying pressure in a gaseous medium, a cooling element provided with at least a displacer and at least a regenerator and additionally comprising a connecting line b... | 01/07/1997 |
| 5585812 | Adjustable microwave antenna The invention relates to a microwave antenna for the generation of a beam with adjustable parameters. Use is made of a reflective Fresnel zone plate that is written into a thin layer of silicon by means of a laser plus deflection means. A reflector is pos... | 12/17/1996 |
| 5574461 | Radar apparatus for connecting to a gun A radar apparatus provided with a Cassegrain antenna to be mounted on the barrel of a gun. The Cassegrain antenna is of the polarization twist type with a flat adjustable mirror being used to generate a lead angle. In addition, gun-induced vibrations tran... | 11/12/1996 |
| 5573218 | Apparatus for the three-dimensional orientation of an object An apparatus for orienting an object mounted on a first plane, for example a radar antenna, with reference to a second plane, for example the deck of a ship. The apparatus includes a stack of three identical, substantially annular housings each of which i... | 11/12/1996 |
| 5539407 | Radar apparatus provided with ECCM facilities A radar apparatus that is provided with auxiliary antennas (5, 10) of an omnidirectional nature. In addition to customary ECCM applications, such as side-lobe suppression and side-lobe blanking, the auxiliary antennas (5, 10) are also used for the emissio... | 07/23/1996 |
| 5442362 | Radar apparatus Radar apparatus provided with a signal generator (1), transmitter means (2), antenna means (3), receiver means (4), a video processor (6) and an indication device (7) for the generation of a radar picture of the surroundings of the radar apparatus with a ... | 08/15/1995 |
| 5404148 | Phased array antenna module An antenna having antenna modules for an extremely wideband active monopulse phased array system, the modules including a housing provided with four radiators of the rectangular open-ended waveguide type and with an electric circuit. With the antenna modu... | 04/04/1995 |
| 5347282 | Apparatus for the observation and indentification of helicopters Apparatus for the observation and identification of helicopters by means of an FM-CW radar apparatus provided with transmitter means (1), antenna means (2) and receiver means (3). Blade flashes caused by the rotor blades are digitized by A/D converter (4)... | 09/13/1994 |
