| Patent Number |
Title Of Patent |
Date Issued |
| 6452536 |
Antenna system |
September 17, 2002 |
| 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 respective antenna face. The met |
| 6253697 |
Ship provided with a distortion sensor and distortion sensor arrangement for measuring the disto |
July 3, 2001 |
| 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. The distortion sensor arrangeme |
| 6233820 |
Method for manufacturing of a multilayer microwave board and boards obtained on the basis of thi |
May 22, 2001 |
| 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 removed by drilling during which |
| 6229999 |
Receiver system |
May 8, 2001 |
| 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. According to the invention, the presence |
| 6186397 |
Method for operating a fire-control system based on a heuristic algorithm |
February 13, 2001 |
| 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 to engage the plurality of t |
| 6175330 |
Array antenna and method for operating an array antenna |
January 16, 2001 |
| 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 within the antenna volume. In a transm |
| 6140962 |
Antenna system |
October 31, 2000 |
| 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 delayed per T/R module with a delay |
| 6115002 |
Array of radiating elements |
September 5, 2000 |
| 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 causes the common surface to const |
| 6100844 |
Radar apparatus with sidelobe blanking circuit |
August 8, 2000 |
| 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. Comparators compare the outputs o |
| 6091360 |
Antenna system |
July 18, 2000 |
| 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 signal from an adjacent face |
| 6037896 |
Method for determining an impact point of a fired projectile relative to the target |
March 14, 2000 |
| 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. The projectile's impact point |
| 6031605 |
Arrangement for the detection of targets |
February 29, 2000 |
| 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 axis (4) containing a mirror ( |
| 6023123 |
Acoustic vibration generator |
February 8, 2000 |
| 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 one or a plurality of actuators |
| 5977930 |
Phased array antenna provided with a calibration network |
November 2, 1999 |
| 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 to the processing of any phase an |
| 5943004 |
Method for the transmission of radar transmitter pulses |
August 24, 1999 |
| 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 incremental frequencies, which pulses |
| 5920027 |
Fire control system |
July 6, 1999 |
| 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 measurements made. |
| 5917456 |
Stripline antenna |
June 29, 1999 |
| 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 polarization of the antenna is selectably |
| 5877855 |
Arrangement for the detection of targets |
March 2, 1999 |
| 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 extractors. Between the matrices genera |
| 5862274 |
Apparatus for the assessment of damage to a ship |
January 19, 1999 |
| 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 can be accurately determined. The f |
| 5832855 |
Ship's hull |
November 10, 1998 |
| 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 separate bow waves develop. By |
| 5805109 |
Antenna system |
September 8, 1998 |
| 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 rear-reference signal for each missi |
| 5798729 |
Radar apparatus |
August 25, 1998 |
| 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 a blanking circuit. The blanking |
| 5790067 |
Jam-resistant radar apparatus with phase shift provisions |
August 4, 1998 |
| 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 phase shift upon reception. This |
| 5753915 |
Arrangement and method for the detection of targets |
May 19, 1998 |
| 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 targets moving against a homo |
| 5736966 |
Adjustable microwave antenna |
April 7, 1998 |
| 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 positioned behind the Fresnel zone p |
| 5731780 |
Radar system |
March 24, 1998 |
| 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 an angle with a normal on the |
| 5724012 |
Transmission-line network |
March 3, 1998 |
| 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 ducts that may be used for the f |
| 5708444 |
Multipatch antenna with ease of manufacture and large bandwidth |
January 13, 1998 |
| 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 radiating patches (2), a sel |
| 5708437 |
Radar apparatus |
January 13, 1998 |
| 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 carrier frequency differences. The |
| 5640157 |
Information system for a ship |
June 17, 1997 |
| 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 having a built-in transponder |
| 5629516 |
Optical scanning apparatus with the rotation of array into two directions |
May 13, 1997 |
| 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 array can be rotated around an ax |
| 5627545 |
Radar apparatus |
May 6, 1997 |
| 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 the range-doppler matrices and |
| 5590534 |
Stirling cooler |
January 7, 1997 |
| 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 between the compressor and the |
| 5585812 |
Adjustable microwave antenna |
December 17, 1996 |
| 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 positioned behind the Fresnel zone p |
| 5574461 |
Radar apparatus for connecting to a gun |
November 12, 1996 |
| 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 transmitted to the Cassegrain antenna |
| 5573218 |
Apparatus for the three-dimensional orientation of an object |
November 12, 1996 |
| 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 is provided with an upper surface |
| 5539407 |
Radar apparatus provided with ECCM facilities |
July 23, 1996 |
| 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 emission of frequency-shifted pulses whi |
| 5442362 |
Radar apparatus |
August 15, 1995 |
| 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 first resolution. A selected |
| 5404148 |
Phased array antenna module |
April 4, 1995 |
| 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 modules being suitably stacked, the |
| 5347282 |
Apparatus for the observation and indentification of helicopters |
September 13, 1994 |
| 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) and processed by Fourier analysi |
| 5329284 |
Radar apparatus |
July 12, 1994 |
| Radar apparatus provided with a transmit generator and antenna means for the transmission of comparatively long, linearly frequency-modulated transmitter pulses. Echo signals are received by antenna means and a heterodyne signal is generated in mixer stage. Propagation time differenc |
| 5311188 |
Radar apparatus provided with a coherent clutter map |
May 10, 1994 |
| A radar apparatus provided with transmitter means (1), rotating antenna means (2) and receiver means (3) for the transmission per burst and the processing in a video processor of radar echo signals. The video processor includes moving target detection unit (4) provided with a doppler fil |
| 5311187 |
Search radar system |
May 10, 1994 |
| A search radar system, is provided which includes at least one search radar device (1) having a primary antenna (2) and at least one secondary radar device (3) having an SSR/IFF antenna (4). The radar devices (1, 3) independently supply plot data from which signals are derived that are |
| 5301339 |
System for dynamic communication among subsystems implementing data requests by data type and lo |
April 5, 1994 |
| A communication system comprises a bus system and a number of subsystems which produce and process information, each subsystem being coupled to the bus system by a respective interface. A subsystem makes requests for information of a desired type, including an indication of such type of |
| 5278564 |
Method and apparatus for the determination of the height of a target |
January 11, 1994 |
| Radar apparatus for determining the height of a low-elevation target, the target being illuminated by a transmitter (7) and an antenna (3) via a TR-switch (6). Electromagnetic radiation reflected directly by the target and indirectly by the target via the earth surface is received by the |
| 5223749 |
Charging circuit |
June 29, 1993 |
| A resonant charging circuit for the charging of a pulse-forming network from a voltage source is provided with a first serial circuit provided with a first switch, an inductor and a first diode for charging the pulse-forming network. The charging circuit is further provided with a se |
| 5173701 |
Radar apparatus with jamming indicator and receiver device with jamming indicator |
December 22, 1992 |
| A radar apparatus is provided with a jamming indicator (11), the jamming indicator (11) having the same bandwidth as the preselector filter (15) of the radar receiver (5). |
| 5170112 |
Power supply device for supplying power to a filament of a radar transmitter |
December 8, 1992 |
| An improved power supply device is disclosed where the filament (2) of a transmitter tube (1) is powered by an AC generator (18) via a transformer (12) and a rectifier (24), and where the AC generator (18) receives a feedback via the bifilar winding (5) of a pulse transformer (3). |
| 5159295 |
Microwave vector modulator and device for matching a microwave load |
October 27, 1992 |
| A microwave vector modulator (4) of the reflective type is used to match a microwave load. The adjustable reflection of the vector modulator is obtained by semiconducting surfaces (18, 19, 20, 21), illuminated by light-emitting means (24, 25, 26, 27). |
| 5134409 |
Surveillance sensor which is provided with at least one surveillance radar antenna rotatable abo |
July 28, 1992 |
| The invention relates to a surveillance sensor provided with at least one surveillance radar antenna 1 and at least one co-located and co-rotating electro-optical surveillance sensor 5 mechanically connected to said radar antenna. A combined panoramic picture is compiled by combining inf |
