Bizarre Patents
Nicotine Containing Dental Floss
Keep away cavities and cancer at the same time.
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 |
| 7876262 | Radar system Electronically steered radar systems such as frequency scanning radars are particularly suitable for detecting and monitoring slow moving, ground-based targets. So-called crawler radar systems are intended for detection of targets that deliberately attempt to avoid ... | 01/25/2011 |
| 7411543 | Maximum-likelihood rocket identifier A sensor suite determines location and velocity information relating to a missile threat, which is converted to missile or rocket state estimates. The state estimates are transformed into time-invariant dynamic parameters, unique for each missile type. Estimated roc... | 08/12/2008 |
| 7336218 | Radar system with peak frequency analysis and window functions A radar system in which a beat signal is generated by transmitting a transmission signal that is subjected to frequency modulation into a triangular wave and receiving a reflection signal from a target, the beat signal is sampled, and a window function is applied to... | 02/26/2008 |
| 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 |
| 7242345 | Method for controlling a radar antenna A method is described for detecting an object with target radar. After the first detection of an object, the antenna is tilted. The original direction towards the object is restored by electronically steering the emitted beam. The beamsteering is obtained by changin... | 07/10/2007 |
| 7187321 | Interference determination method and FMCW radar using the same Occurrence of interference is detected using sampled amplitude data obtained by oversampling a beat signal. It is detected by comparing the absolute value (|VD|) of variation in the sampled data with a threshold value (TH). When interference occurs, a wideband signa... | 03/06/2007 |
| 7170443 | Method for the evaluation of radar data for fully automatic creation of a map of regions with interference A method for the evaluation of radar data for fully automatic creation of a map of regions with interference, in which undesirable reflections frequently occur includes the following method steps. The region to be mapped is divided up into cells. The short-lived tar... | 01/30/2007 |
| 7161529 | Dual forward scattering method for modeling multipath propagation Analysis of electromagnetic (or acoustic) multipath propagation inventively focuses upon the transmitter-to-target propagation (transmitted propagation reaching target via both direct pathway and forward scattered pathway) and the target-to-receiver propagation (re-... | 01/09/2007 |
| 7123184 | Transmit-receive FM-CW radar apparatus A transmit-receive FM-CW radar apparatus according to one mode of the invention comprises: a mixer for downconverting an IF signal; a switch provided on the input side of the mixer; and a switch controller for controlling the switch on and off in different modes and... | 10/17/2006 |
| 7106242 | High range resolution radar system Described herein is a method and apparatus for improving high range resolution of a radar system. The method comprises phase shifting a radar pulse to be transmitted at substantially the radar transmission frequency and phase shifting the received radar pulse at sub... | 09/12/2006 |
| 7053815 | Radar tracking system A radar tracking system for an anti-aircraft, missile, including angle tracking, doppler tracking and range tracking feedback loops operating on sum and difference channels. Fast fourier transform digital filters are used to provide a frequency spectrum of the sum a... | 05/30/2006 |
| 7026980 | Missile identification and tracking system and method Sensors determine the kinematic measurements of a boosting missile, and the information is applied to a plurality of pairs or sets of filters, one of which is matched to the characteristics of a particular target type, and the other of which is general, and not matc... | 04/11/2006 |
| 7026981 | Surface interaction region methodology for delimiting multipath propagation inquiry Analysis of electromagnetic (or acoustic) multipath propagation inventively confines the assessment of multipath propagation to a “surface interactive region” (“SIR”), intermediate the target and transmitter and/or the target and receiver. The down range tim... | 04/11/2006 |
| 6975264 | Signal separating system A signal separating system 1 comprises a frequency conversion element 3, a dynamic filter component 4 with associated coherent stop slot and non-coherent passband, optionally a signal wave enhancer 7 with bypass, and a frequency reconvers... | 12/13/2005 |
| 6967613 | Broadband waveform reconstruction for radar Resolution of a radar operating within a bandwidth is improved by defining a quantity of substantially rectangular sub-band filters to subdivide the bandwidth in the frequency domain into the quantity of sequential sub-bands having a sub-bandwidth. Each signal sent ... | 11/22/2005 |
| 6937185 | Rain versus target discrimination for doppler radars A method of removing returns from rain in Doppler radar systems (and corresponding apparatus and computer software) comprising receiving a Doppler radar return signal, transforming the signal into a range versus frequency map, for a plurality of range cells, perform... | 08/30/2005 |
| 6909396 | METHOD AND DEVICE FOR DETERMINING THE POSITION OF AT LEAST ONE SECOND TRANSMITTING AND RECEIVING DEVICE IN RESPECT OF A FIRST TRANSMITTING AND RECEIVING DEVICE IN A PASSIVE ACCESS CONTROL SYSTEM OPERATING IN THE GHZ RANGE A method for determining the position of at least one second transmitting and receiving device (3) in respect of a first transmitting and receiving device in a passive access control system operating in the GHz range, comprising the steps of using a radar met... | 06/21/2005 |
| 6536893 | Waterfast and smearfast inks using ink jet delivered dye sublimation dyes A method of printing an ink jet ink on a print medium is provided, wherein a printed image is formed that is both waterfast and smearfast. The method employs a water-insoluble colorant and comprises: (a) providing an aqueous-based ink containing at least ... | 03/25/2003 |
| 6411250 | Electromagnetic sensor system A vehicle (160) such as a motor road vehicle is fitted with an electromagnetic sensor system comprising transmitting means (e.g. 4, 1) for transmitting a radio frequency signal, receiving means (e.g. 2, 6) for receiving reflections of said signal from rem... | 06/25/2002 |
| 6389084 | Apparatus and method for equalizing a signal independent of the impact of doppler frequency A method and apparatus for equalizing a signal to accurately deconvolute the channel includes deriving a functional relationship between Doppler frequency and variance between the instantaneous energy of the received signal and the mean energy of the rece... | 05/14/2002 |
| 6297764 | Radar receiver having matched filter processing An electronic counter-measure receiver can be colocated with a threat simulator radar, which transmits a radar signal. As a pulsed-Doppler signal, this transmitted radar signal is sampled as a reference signal by the receiver to determine quadrature, cohe... | 10/02/2001 |
| 6211815 | Coherent radar detection using non-coherent architecture In a radar system having a transmitter that produces pulses to be radiated by an antenna and a receiver that detects target information, complex demodulation is performed on an attenuated and limited waveform of the transmitter produced pulse. A matched f... | 04/03/2001 |
| 6204802 | Apparatus for detecting relative velocity In order to produce relative velocity signals in accordance with the relative velocity between a following and a preceding vehicle, a Doppler signal transmitter, which targets the preceding vehicle, is attached to the following vehicle. The thus obtained ... | 03/20/2001 |
| 6052421 | Method for separating a desired signal from an interfering signal A method for separating a desired signal from an interfering signal, which is particularly useful when the desired signal is substantially weaker than the interfering signal, includes the steps of providing a combined signal which contains both a desired ... | 04/18/2000 |
| 6049302 | Pulsed doppler radar system with small intermediate frequency filters A process and a system for selecting a pulse repetition frequency that causes clutter pulse repetition frequency lines from the negative carrier frequency and from the clutter harmonic frequencies to lay on top of clutter pulse repetition frequency lines ... | 04/11/2000 |
| 6040796 | Radar system installable in an automotive vehicle for detecting a target object A modulation signal generating section produces a modulation signal for controlling an oscillation frequency of a voltage-controlled oscillator. The modulation signal generating section comprises a triangular wave oscillator producing a linear modulation ... | 03/21/2000 |
| 6018311 | Noncoherent gain enhancement technique for improved detection-estimation performance A system and method of processing data in a sensor system which receives signal returns from pulsed coherent transmitted signals which are transmitted at a pulse repetition rate and with a pulse repetition interval (PRI). The method includes providing ran... | 01/25/2000 |
| 5926125 | Synthetic aperture radar A method of operating a SAR system comprised of emitting a sequence of pulses toward a target, alternating characteristics of pairs of successive pulses, receiving reflected pulses from the target, passing the received reflected pulses through a filter, m... | 07/20/1999 |
| 5864313 | Process for determining the intermediate frequency deviation in frequency pulsed radar systems The invention relates to a process for determining the deviation of the intermediate frequency from a given reference frequency (fR) in the case of a frequency-pulse radar system, characterized by the time-related scanning of the echo signal such th... | 01/26/1999 |
| 5852418 | Notched-spectrum swept-frequency generator and method therefor A notched-chirp generator (20), utilizing first and second chirp generators (28, 30), a functional conversion element (40), an antichirp generator (42), a summing element (64), and a translation element (66), generates a notched-chirp signal (24). The sec... | 12/22/1998 |
| 5796364 | Method of determining the velocity of a radar target A method of determining the velocity of a radar target wherein at least two different pulse repetition frequencies are used. Each pulse repetition frequency comprises a predetermined division into equidistant Doppler numbers. For an echo signal, a Doppler... | 08/18/1998 |
| 5790068 | AFC control switching circuit An automatic frequency control loop for maintaining a center carrier freqcy fed to a notch filter for blocking out system reverberation includes, along with the conventional elements found in an automatic frequency control loop, a control switching circu... | 08/04/1998 |
| 5661487 | Digital center line filter A center-line filter for a radar receiver is a cascade of an analog filter and a digital filter. The purpose of the filter cascade is to filter out all but a single line of a pulsed spectrum. The signal is passed through the analog filter, and then over-s... | 08/26/1997 |
| 5657026 | Beacon signal receiving system A method and apparatus for locating and tracking a portable transmitter that may be deposited with currency or other items desired to be tracked, comprising a doppler antenna array, analog antenna switching, radio frequency and intermediate frequency circ... | 08/12/1997 |
| 5644315 | Doppler ratio detection radar with range CFAR This invention improves the detection performance of doppler radar by censoring clutter at the output of the doppler processor, and it functions in operative association with a range CFAR. By a selective rejection of signals based on doppler characteristi... | 07/01/1997 |
| 5481270 | Radar with adaptive range sidelobe suppression A method and apparatus for identifying a remote target includes a transmitter for transmitting pulses of energy toward the target for generating echo signals, and a receiver for receiving the echo signals, and for generating received signals representing ... | 01/02/1996 |
| 5473332 | RFI suppression circuit and method Improvement of radar sign-to-noise ratio and detection sensitivity in radar systems is achieved by methods employing the subtraction of the unwanted radio frequency interference, RFI, or "clone" signals thereof, from the total received signal. The Clone s... | 12/05/1995 |
| 5467091 | Radar and other communication systems having large bandwidth and large dynamic range A large bandwidth communication system has a transmitter to transmit signals over a selectable frequency operating range and a receiver having a first mixer for mixing an LO1 signal with received transmit signals. The receiver has a first IF for processin... | 11/14/1995 |
| 5376940 | Helicopter recognition radar processor A radar processor is disclosed for processing the radar return samples from a Doppler radar receiver to discriminate helicopter targets from fixed-wing targets. The samples are passed through a helicopter filter which eliminates the target skin Doppler re... | 12/27/1994 |
| 5345470 | Methods of minimizing the interference between many multiple FMCW radars Three methods are used to minimize the interference between multiple FMCW radars. The first, basic method is to use spread spectrum waveforms which differ for each radar. The FMCW waveforms have different modulation slopes for each frequency excursion. Th... | 09/06/1994 |
