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| Number | Title | Issue Date |
| 7782250 | Millimeter wave radar target simulation systems and methods A millimeter wave radar target simulation system and method. The system includes a down-converter that converts a millimeter wave radar signal to an intermediate frequency, an electrical-to-optical modulator that modulates an optical signal based on the down-convert... | 08/24/2010 |
| 7724182 | Radar system The radar system includes: a transmission circuit transmitting the radar waves via a transmission antenna; a receiving circuit receiving the reflected waves via a receiving antenna; a delay line having an end connected to aid transmission circuit and the other end c... | 05/25/2010 |
| 7548188 | Precision radio frequency delay device A method of delaying propagation of a radio frequency (RF) signal through a circuit is described. The method comprises receiving data that represents a delay time interval, providing an RF signal when a start pulse triggers a memory device, initiating a count throug... | 06/16/2009 |
| 7430413 | Method and device for simulating a radio channel The invention relates to a device and a method for simulating a radio channel, wherein a signal transmitted and received by more than one antenna is simulated. The method comprises supplying an input signal of each antenna to a similar delay line, each delay line co... | 09/30/2008 |
| 7372402 | Method for enhancing the measuring accuracy in an antenna array The invention refers to a method and a system for enhancing the measuring accuracy in an antenna array (1), where the method comprises the steps of; a) receiving analog signals on all antenna elements (2) at a first time t1; producing first ... | 05/13/2008 |
| 7372398 | Electronic target position control at millimeter wave for hardware-in-the-loop applications An apparatus for use in controlling a simulated target position in a millimeter wave, hardware-in-the-loop system includes a pair of horns and a conditioning circuit. The conditioning circuit is capable of generating a pair of output millimeter wave signals, each to... | 05/13/2008 |
| 7365677 | Compact radar test range A system for testing radar in accordance with one embodiment comprising a target motion platform; a target motion platform controller for controlling motion of the platform; a radar responsive tag and a delay line located on the target motion platform; the radar whi... | 04/29/2008 |
| 7333050 | Radio frequency signature augmentation system Systems and methods are provided for simulating a target platform. An incoming radar signal is transmitted from a radar source and is received at a first platform. Time of the received radar signal is modulated to generate first and second range extent signals. The ... | 02/19/2008 |
| 7327308 | Programmable method and test device for generating target for FMCW radar A test device for a frequency modulated continuous wave (FMCW) radar is provided. The test device has a central control unit for monitoring the FMCW radar. When the FMCW radar transmits a frequency modulated continuous signal to search for a target, the central cont... | 02/05/2008 |
| 7292182 | Method of calibrating a microwave source The present invention relates to a method for calibrating the phase of a microwave source, in which: a calibration circuit is closed, the calibration circuit comprising an injection channel connected to a measurement channel via the source to be calibrated; a test s... | 11/06/2007 |
| 7250823 | Direct digital synthesis (DDS) phase locked loop (PLL) frequency synthesizer and associated methods The phase locked loop (PLL) frequency synthesizer includes a phase detector receiving a reference signal, a controlled oscillator (e.g. a voltage controlled oscillator) connected to the phase detector and generating a synthesized frequency output signal based upon t... | 07/31/2007 |
| 7231338 | Distributed simulation system having phases of a timestep A distributed simulation system is provided in which timesteps may be divided into a first phase (referred to as the zero time phase herein) and a second phase (referred to as the real time phase herein). In the first phase, each distributed simulation node in the s... | 06/12/2007 |
| 7180921 | Method and apparatus for driving laser diode sources A method and apparatus for driving a laser diode source, such as a laser diode or a laser diode array. The driver controlling current in response to a signal indicative of excessive current or current density. The signal may be derived from the drive current, the vo... | 02/20/2007 |
| 7177598 | Method and system for reducing channel interference in a frame-synchronized wireless communication system Base stations having potentially interfering terminal stations that are geographically located on the same or similar diagonal or Line of Sight (relative to the base station) operate on a first set of time frames (e.g., “even” time frames). Similarly, base stati... | 02/13/2007 |
| 7154431 | Signal synthesizer and method therefor A digital synthesizer includes a digital radio frequency memory (DRFM) for storing phase values and corresponding digital signals. The digital synthesizer includes a digital processing circuit receiving input from the DRFM, the circuit including tapped delay lines a... | 12/26/2006 |
| 7154433 | Method and device for the detection and track of targets in high clutter A method for discriminating and tracking a target in a clutter cloud includes transmitting a radar signal at a signal bandwidth to: identify a range extent of a clutter cloud; determine a centroid and a velocity growth rate of the clutter cloud; and identify a direc... | 12/26/2006 |
| 7145504 | Arbitrary radar target synthesizer (arts) A system for generating a simulated radar return signal. The novel system includes a processor adapted to receive target and waveform parameters and in accordance therewith generate a composite digital signal, and a digital to analog converter adapted to convert the... | 12/05/2006 |
| 7139592 | Null deepening for an adaptive antenna based communication station A method and apparatus is described for modifying a smart antenna processing strategy determined from a set of signals received at an array of antenna elements of a wireless station, such as a set of weights for processing received antenna signals or forming a set o... | 11/21/2006 |
| 7129839 | Device for monitoring an area The present invention relates to a monitoring device (1) with a transmitter unit (2) and a receiver unit (3) for monitoring an area. Slotted cables serve as antennas. According to the invention, a first slotted cable is arranged as a transmittin... | 10/31/2006 |
| 7124956 | Product comprising product sub-parts connected to each other by a crimp connection In the case of a product (1) having a first product sub-part (4) and a second product sub-part (3), the two product sub-parts (3, 4) each comprise two connection zones (8, 9, 10, 11) consisting of metal and of suitably thin constru... | 10/24/2006 |
| 7015857 | Calibrating an antenna by determining polarization Calibrating an antenna includes receiving a signal sent from a reference located within a region. The signal has a polarization within an expected polarization range. Polarization value sets are established in accordance with the expected polarization range. Polariz... | 03/21/2006 |
| 6961016 | Estimating an antenna pointing error by determining polarization Estimating an antenna pointing error includes receiving a signal sent from a reference located within a region. A polarization ratio is evaluated over the region. A minimum polarization ratio variance for the polarization ratio is established. A location correspondi... | 11/01/2005 |
| 6959191 | System for GSM interference cancelling A system for determining the location of a device in a wireless communication network includes at least one antenna for transmitting signals in a wireless communication network. A monitoring unit, located proximate to the at least one antenna, is operable for receiv... | 10/25/2005 |
| 6940938 | Phase locked loop having a single sideband modulator A technique includes detecting a phase difference between an input signal and a first signal. A second signal is generated that has a fundamental frequency indicative of the phase difference. The second signal is modulated to produce the first signal. ... | 09/06/2005 |
| 6933883 | Method and device for aligning radar mount direction, and radar aligned by the method or device A radar mount direction alignment device to be used for aligning the transmit/receive direction of a radar device 2D mounted on a member on which a radar device is to be mounted, such as a vehicle 1. The radar mount direction alignment device has recei... | 08/23/2005 |
| 6930633 | Adaptive glint reduction method and system A method and system for adaptively reducing, in a displacement signal having a value indicative of a measured angular displacement between an antenna boresight and an apparent line of sight to a target, a noise signal having a value indicative of an angular error in... | 08/16/2005 |
| 6865394 | Location detection method, location detection system and location detection program A positioning method, which is related to a technique to measure a correct position of a terminal by preventing time required for the position measurement, of calculating a position of a receiver according to signals from a plurality of wireless transmitters include... | 03/08/2005 |
| 6803877 | Device for generating a transit time delay of a pulsed radar signal and method for operation thereof A device for generating a desired transit time delay of a pulsed radar signal is characterized in that a delay line (13) with signal input and signal output for the pulsed radar signal is provided whose transit causes time delay τ of the pulsed radar signal,... | 10/12/2004 |
| 6756933 | Radar system and characteristic adjustment method thereof A radar system and a characteristic adjustment method for the radar system are provided, in which a control voltage waveform of a voltage controlled oscillator for frequency-modulating a sending signal can be set in a short time without increasing the required amoun... | 06/29/2004 |
| 6529156 | Self calibration of transponder apparatus A method and apparatus is provided for remotely and constantly calibrating a transponder by using the ring around phenomenon. A number of different time varying physical quantities, such as for example temperature, signal level, noise, transmission line f... | 03/04/2003 |
| 6492939 | Phase coherent optically delayed radar target A radar target with delayed reply means. The radar target contains devices for: (a) receiving a radar signal which has a frequency of from about 0.5 to about 94 gigahertz, (b) phase coherently amplitude modulating a continuous wave light emission with the... | 12/10/2002 |
| 6384772 | Wideband phase locking of low offset frequency sources A linear phase detector circuit enables locking of two frequency sources which can operate in the range of 10 GHz with a minimal frequency offset, such as from 0 Hz to 50 KHz. With the frequency sources operating at frequencies F1 and F2 with an offset F2... | 05/07/2002 |
| 6384771 | Automated target generator range and doppler calculator An automated simulator for radar and sonar applications. The inventive simulator is implemented in hardware and generates current parameters with respect to a simulated target in response to a plurality of initial values with respect thereto. In the illus... | 05/07/2002 |
| 6346909 | System for generating simulated radar targets A system is disclosed for generating simulated radar targets that eliminates the necessity for large outdoor test ranges and is relatively low in cost. The simulated radar target generating system provides complex targets of given simulated dimensions at ... | 02/12/2002 |
| 6127962 | Image rejection mixer There is provided an image rejection mixer for downconversion of an incoming signal to a lower intermediate frequency signal, using the absolute difference of frequencies between the incoming signal and the local oscillator signal. The image rejection mix... | 10/03/2000 |
| 6067042 | Test beacon for radar system A test beacon for a radar system includes: a first antenna for receiving a search signal and transmitting a processed search signal, a second antenna for receiving a tracking signal and transmitting a processed tracking signal, a first signal processor fo... | 05/23/2000 |
| 6067041 | Moving target simulator A moving target simulator for testing a radar system has a radio frequency receiver, a digital radio frequency memory in electrical communication with the radio frequency receiver for storing a signal received thereby, a digital delay circuit in electrica... | 05/23/2000 |
| 6011506 | Different models for RF signal train generators and interferoceivers Interferoceivers are apparatus which use optical fiber loop based radio frequency (RF) signal train generators to store transient pulses and regenerate their identical replicas for analysis. The present invention further advances the art of RF signal trai... | 01/04/2000 |
| 5973638 | Smart antenna channel simulator and test system There is disclosed a method and apparatus for verifying the integrity of a smart antenna system. A signal simulator replicates the respective signals received at the multiple sensors of the antenna array, with signal parameters that include the correlated... | 10/26/1999 |
| 5920281 | Radar test system for collision avoidance automotive radar A radar test system for testing a collision avoidance radar system. The radar test system includes circuitry to downconvert a signal from the collision avoidance radar to an intermediate frequency signal, to delay the intermediate frequency signal to simu... | 07/06/1999 |
