The invention relates to an apparatus and method for estimating the distance between a transmitter and a receiver. A method comprising obtaining a signal from a receiver; determining whether the signal more likely propagated through a line-of-sight (LOS) radio channel or a non lme-of-sight (NLOS) radio channel; using a model including parameters selected according to the radio channel to estimate the distance between the receiver and a transmitter which sent the ...
]]> 8111193 http://www.patentstorm.us/patents/8111192/description.html

Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality ...
]]> 8111192 http://www.patentstorm.us/patents/8111191/description.html

Embodiments of the invention include a method to control an antenna pattern of a wideband array antenna wherein a wideband array antenna unit comprising the wideband array antenna and transforming means is accomplished. Embodiments of the invention further include the corresponding wideband array antenna unit and transforming means arranged to control an antenna pattern of an antenna system. The separation between antenna elements in the wideband array antenna can be increased to above one ...
]]> 8111191 http://www.patentstorm.us/patents/8111188/description.html

To provide a smaller radar system having a simple structure with as small number of component parts as possible at a lower cost as compared to conventional ones. A radar system 1 including a 3 dB coupler 5 having four terminals, and a pulse generator 8. A first terminal 51 of the 3 dB coupler 5 is supplied with an output signal from a high frequency oscillator 2 while a second terminal 52 of the 3 dB coupler 5 is connected to a ...
]]> 8111188 http://www.patentstorm.us/patents/8111187/description.html

A passive system is described for detecting radar emissions from vessels, receiving the radar emissions and analysing the data using a series of algorithms and software manipulation to extract radar signatures representative of the identity of the vessel. The data output is capable of comparison with a stored set of data enabling accurate identification of the vessel. The resulting output is displayed on a suitable display. A system having a library of vessel emission signatures can either ...
]]> 8111187 http://www.patentstorm.us/patents/8111186/description.html

A weather radar system for improving output of potential lightning and hail weather conditions. An exemplary system includes a processor that receives and stores the weather radar reflectivity values into a three-dimensional buffer, receives an outside air temperature value, and determines freezing level based on the received outside air temperature value. The processor generates lightning icon(s) when a reflectivity value stored at cell(s) of the three-dimensional buffer above determined ...
]]> 8111186 http://www.patentstorm.us/patents/8106828/description.html

An apparatus for location identification using broadcast wireless signal signatures includes a receiver to receive first measurements of a plurality of wireless television signals. The first measurements are made by a remote device receiving the plurality of wireless television signals. In addition, the apparatus includes a processor to select one or more of a plurality of possible locations of the remote device based on the first measurements and a plurality of associations each ...
]]> 8106828 http://www.patentstorm.us/patents/8106827/description.html

An adaptive array control device is described. The adaptive array control device includes a first array processing section and a second array processing section in which phase responses are almost opposite with respect to a target signal and a signal incoming from another direction. The adaptive array control device further includes a control signal generation section, and a control section. The control signal generation section calculates a control signal using output signals of the first ...
]]> 8106827 http://www.patentstorm.us/patents/8106826/description.html

An antenna has multiple antenna elements, with a beam forming Butler matrix, having antenna ports and input/output ports, with each of said antenna elements being connected to a respective port of the beam forming Butler matrix. Transceiver circuitry is connected to each of the input/output ports of the beam forming matrix by means of respective distinct transmit and receive paths and a respective duplexer. Individually controllable gain control elements are located in each of the transmit ...
]]> 8106826 http://www.patentstorm.us/patents/8106825/description.html

A distributed receiver in signal communication with an active antenna array is described. The distributed receiver may include an exciter, a plurality of transmit/receive (“T/R”) modules, and a frequency source operable to provide a frequency reference signal to the T/R ...
]]> 8106825 http://www.patentstorm.us/patents/8106824/description.html

Techniques, systems and apparatus are described for tracking a satellite signal. In one aspect, an apparatus includes a tracking module to generate a satellite-based measurement result by tracking a satellite signal received from a satellite. The tracking module includes sub-tracking modules with each sub-tracking module configured to generate the satellite-based measurement result by using a different integral ...
]]> 8106824 http://www.patentstorm.us/patents/8106816/description.html

A set of device parameters consisting of clock bias and position of a mobile device is determined without previous knowledge of the week number (WN) in that solutions of a set of equations derived from a least squares type weight function involving pseudoranges related to the device parameters via basic equations are attempted with a time of week (TOW) extracted from satellite signals and various week number candidates. A solution algorithm which iteratively solves the set of equations is ...
]]> 8106816 http://www.patentstorm.us/patents/8106815/description.html

Disclosed is a system for positioning a terrestrial user. The system includes navigation satellites placed in medium altitude orbits, management satellites placed in high orbits, able to manage the navigation satellites and communicate with the Earth. The management satellites can include a set of at least three management satellites each placed in a high orbit, having a plane that is inclined with respect to the plane of the terrestrial equator and cuts the equator along a diametral ...
]]> 8106815 http://www.patentstorm.us/patents/8106814/description.html

The present invention relates to a method enabling precise determination of the elevation of a projectile following a ballistic trajectory by use of a conventional Doppler surveillance radar. The method includes calculating first the estimate {circumflex over (Γ)}_ρ of the value of the radial component Γ_ρ of the acceleration of the projectile from the quantities {dot over (d)} and {umlaut over (d)}, respectively representing the first derivative and the second ...
]]> 8106814 http://www.patentstorm.us/patents/8106813/description.html

An radar apparatus including a first transmitter, a second transmitter, a first receiver, a second receiver, and a control device. The control device is programmed to use both the characteristics of a first transmit signal from the first transmitter and a second transmit signal from the second transmitter to determine a first control signal for applying to the first receiver to determine its impulse response characteristics, and to determine a second control signal for applying to the ...
]]> 8106813 http://www.patentstorm.us/patents/8106812/description.html

The invention relates to a method for detection of motion of the surface of an object by means of a detection device, the object being stationary during a detection process, and situated in a space on the opposite side of a wall in relation to the detection device, and having a relative dielectric constant εr greater than 1.1. The method comprises steps of transmitting radar signals and receiving radar signals reflected by the object, and if a motion has been detected, in addition ...
]]> 8106812 http://www.patentstorm.us/patents/8106811/description.html

A system and method for determining the roll rate and roll angle of a spinning platform in a jamming environment, by suppressing the interference signals from the received GPS signals and using the measured phase and amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is ...
]]> 8106811 http://www.patentstorm.us/patents/8106810/description.html

An electromagnetic radiation filter uses a plurality of dipole antennas to mitigate the transmission of electromagnetic radiation. The dipole antennas can form one or more arrays that scatter electromagnetic radiation. Examples of application include mitigating the reception of a difference frequency in non-linear radar, use in protective goggles, and use in a protective ...
]]> 8106810 http://www.patentstorm.us/patents/8102317/description.html

An apparatus comprises a receiver to receive a plurality of wireless television signals each representing a television channel, and a measurement circuit to identify the television channels based on the wireless television signals. One or more of a plurality of possible locations of the apparatus are selected based on identities of the television channels identified by the measurement circuit and a plurality of associations each associating one of the possible locations with identities of ...
]]> 8102317 http://www.patentstorm.us/patents/8102316/description.html

A method for monitoring and tracking the position of a subject comprises, in an exemplary embodiment, the steps of embedding a transponder into an article to be worn by the subject and installing software in a GPS-enabled receiver, such as a cell phone or the like, for synchronizing and communicating with the transponder. The receiver is to be maintained by a user, such as a guardian or the like, and stores a unique transponder code, allowing the receiver to synchronize with the ...
]]> 8102316 http://www.patentstorm.us/patents/8102315/description.html

An algorithm of collecting and constructing training location data is provided as it is applied to a test space of a plurality of beacons and training locations. The signal patterns of beacons adjacent to each training location are detected. The signal pattern is converted into a signal vector and each signal vector is integrated for calculating a feature vector of each training location. The coordinate and the feature vector of each training location, after being recorded, are introduced ...
]]> 8102315 http://www.patentstorm.us/patents/8102314/description.html

The invention relates to a position-finding method for determing the location of a mobile object. The features, for example received field strengths, of a plurality of base stations are measured, and the object position is located from these features, using a reference map. During an initialization process, a reference map is created which comprises a multiplicity of positions and the associated feature-dependent values. During use of the method, a plurality of position-finding processes ...
]]> 8102314 http://www.patentstorm.us/patents/8102313/description.html

The Method for transmitting a signal from a transmitter in an area around the transmitter via a satellite comprising the steps of

• • transmitting a first signal having a first frequency from the transmitter to a satellite having a retrodirective antenna array comprising receiving antennas and transmitting antennas,
  • receiving the signal transmitted from the transmitter by the receiving antennas of the retrodirective antenna array as first ...
    ]]> 8102313 http://www.patentstorm.us/patents/8102310/description.html
  • Patent Number:  8102310
  • Publication Date:  2012-01-24
  • Inventors:  Krikorian, Kapriel; Rosen, Robert; Krikorian, Mary

  A process for detecting and discriminating a particular target, such as an ambulating human, amidst an environment crowded with other objects or humans having similar doppler profiles to the desired target. A method according to one embodiment includes generating an initial radar image corresponding to a received doppler profile of a target, and generating a matched filter signal corresponding to the received doppler profile. The matched filter signal is correlated with subsequently ...
  ]]> 8102310 http://www.patentstorm.us/patents/8102309/description.html

• Patent Number:  8102309
• Publication Date:  2012-01-24
• Inventor:  Nakagawa, Kado

Provided is a radar device capable of accurately calculating directions and the number of targets. A direction calculation unit includes a correlation matrix addition prohibition unit that prohibits, when a peak frequency in a plurality of modulation periods of a target is in the vicinity of 0, addition of a correlation matrix generated from a peak frequency spectrum having the peak frequency in the vicinity of 0, and calculates the direction of the target on the basis of a summed ...
]]> 8102309 http://www.patentstorm.us/patents/8102308/description.html

The present invention provides a radar apparatus capable of changing a characteristic of filter processing while considering also a relative velocity of an object. A measurement section measures a relative position and a relative velocity of an object such as another vehicle, a pedestrian, and an object placed on a road. The radar apparatus calculates a time until the object and an own vehicle collide with each other, based on the relative position and relative velocity of the object ...
]]> 8102308 http://www.patentstorm.us/patents/8102307/description.html

A Mixer structure (210) for Doppler radar applications and a Doppler radar sensor (30) having an oscillator input port (LO) for output signals from an electric oscillator (32), having an radio frequency input port (RF) for output signals from receiving means (34), having an output port (IF) for an overall output intermediate signal produced in the mixer structure (210) and having two mixer branches (12a, 12b) each with a diode ...
]]> 8102307 http://www.patentstorm.us/patents/8102306/description.html

Typical inventive practice provides for electronic communication of a computer with a display, an active radar device (for transmitting target-location data and environmental data), a light measurement device (for transmitting visual light data), and passive imaging devices covering bands in the visual, infrared (MWIR and/or LWIR), and millimeter wave regions of the electromagnetic spectrum. Inventive software in the computer's memory establishes “operational modes.” Each operational ...
]]> 8102306 http://www.patentstorm.us/patents/8102305/description.html

According to one embodiment, a method comprises receiving sensor data generated by one or more sensors in response to sensing a structure. The sensor data is filtered to identify edge data and reverberation data each describing the same structural feature of the structure. Image data for a filtered image of the structure is generated from the edge data, but not from the reverberation ...
]]> 8102305 http://www.patentstorm.us/patents/8102304/description.html

A transponder (12) transmits a reply in response to an interrogation input thereto, the interrogation including twin pulses, and a monitoring processor (13) transmits to the transponder a pseudo interrogation identical in format to the interrogation, receives from the transponder a reply responding to the pseudo interrogation, and monitors a performance of the transponder, the monitoring processor (13) including a pulse spacing adjuster (131c) operable to ...
]]> 8102304 http://www.patentstorm.us/patents/8102303/description.html

A method for distance measurement and data transmission in a continuous wave radar system is described. A continuous wave radar system has a transmit and receive module and at least one transponder device, a mobile control and monitoring device and an HMI system. Transponder devices are searched for with the aid of an unmodulated continuous wave signal as an interrogation signal, such that the transponder device can send a radio response signal to the transmit and receive module in response ...
]]> 8102303 http://www.patentstorm.us/patents/8102302/description.html

A receiver in a mode 5 air traffic control system provides amplitude and phase signal outputs a digital data stream containing preamble and flight information from data transmitted from an aircraft. A signal splitter divides the amplitude and phase signal outputs between an odd channel and an even channel that carry odd-numbered pulses and even-numbered pulses, respectively. An odd channel data decoder connected to the signal splitter extracts signals encoded in the odd channel and forms an ...
]]> 8102302 http://www.patentstorm.us/patents/8102301/description.html

Techniques are described that allow information to be acquired by an ADS-B system of an aircraft without the installation of ADS-B dedicated flight crew controls or wired data interfaces in the aircraft. In one or more implementations, a receiver is associated with the ADS-B system in the aircraft. The receiver is configured to receive transmissions from a transponder of the aircraft, such as a radar transponder of a Traffic Collision Avoidance System (TCAS), or the like. Information used ...
]]> 8102301 http://www.patentstorm.us/patents/8102300/description.html

A transmitter 122 transmits interrogations to aircraft airborne in a coverage, a receiver 123 receives signals transmitted from aircraft airborne in the coverage, reply analyzers 132b and 133b analyze a reply responding to an interrogation transmitted from the transmitter, as the reply is detected from signals received by the receiver, and a squitter analyzer 132d analyzes an extended squitter, as the extended squitter is detected from ...
]]> 8102300 http://www.patentstorm.us/patents/8102299/description.html

A strip-map Synthetic Aperture Radar (SAR) auto-focus image generation process is provided. Batches of raw radar return data are processed in order to form batch images which each have a valid region between invalid regions. The process determines an estimate of the first derivative of a phase error at an end of the valid region, determines a time-shift corresponding to that estimate and uses that information in determining a starting point for the next batch of raw radar return ...
]]> 8102299 http://www.patentstorm.us/patents/8102298/description.html

Embodiments of the disclosed technology comprise a ground penetrating radio device and methods of use for obtaining greater resolution. This is achieved by measuring the composition/reflection off a homogeneous material (e.g., metal plate), determining coefficients to correct the measured/reflection in order to make the measurements look like an idealized reference signal, and then using these coefficients in a digital filter to correct measurements/a reflection off a heterogeneous ...
]]> 8102298 http://www.patentstorm.us/patents/8102297/description.html

There are provided method and system for deinterleaving signals. The method comprises: (a) recording plural signal reception events, wherein each signal reception event is associated with a received signal at a receiver, and represented by a space-time coordinate having a space component based on a location of the receiver and a time component based on an arrival time of the received signal; (b) selecting a subset of signal reception events from the recorded signal reception events, wherein ...
]]> 8102297 http://www.patentstorm.us/patents/8102296/description.html

An exemplary example of the present disclosure proposes an electromagnetic conductor reflecting plate including a perfect electronic conductor and at least two artificial magnetic conductors, wherein the each of the artificial magnetic conductor is disposed on arbitrary one side of the perfect electronic conductor, and a boundary between the perfect electronic conductor and each of the artificial magnetic conductor forms a virtual radiation unit. In addition, an exemplary example of the ...
]]> 8102296 http://www.patentstorm.us/patents/8098200/description.html

A method and system determine a location of an emitter using at least three sensors, each receiving a signal from the emitter. Cross-correlation data is determined for the received signals at sensor pairs, and one or more peaks are identified in the cross-correlation data. A likelihood function is determined for each sensor pair. A total likelihood function is determined for the sensors using the likelihood functions for each sensor pair, and the location of the emitter is determined as the ...
]]> 8098200 http://www.patentstorm.us/patents/8098199/description.html

A steerable antenna includes an radiating antenna element and parasitic antenna elements. Each of the parasitic antenna elements is provided with a pair of PIN diodes. On each of control lines connecting the PIN diodes to a controller, inductors are provided at predetermined intervals on portions of the control line electromagnetically coupled to another steerable antenna. The intervals for providing the inductors is set to such a length that substantially no resonance occurs in a section ...
]]> 8098199 http://www.patentstorm.us/patents/8098198/description.html

A vertically integrated electronically steered phased array that employs beamsteering using a programmable phase locked loop including a local oscillator. The local oscillator provides an oscillator signal that is converted to an RF signal that can be either up-converted for a transmit operation or down-converted for a receive operation. The relative off-set between independently generated local oscillator signals forms the basis of the off-set phase required for a phased array. The ...
]]> 8098198 http://www.patentstorm.us/patents/8098197/description.html

The present invention is a device which includes an antenna and circuitry. The antenna may receive a circularly-polarized signal as first and second linearly-polarized signals. The circuitry is connected to the antenna and is configured for combining the first and second linearly-polarized signals to produce at least two reception patterns. The reception patterns are created by summing the first and second linearly-polarized signals via phase shifting. The reception patterns are optimized ...
]]> 8098197 http://www.patentstorm.us/patents/8098196/description.html

The time compression processor coding methodology gives rise to an exceedingly fast clutter covariance processor compressor (CCPC). The CCPC includes a look up memory containing a very small number of predicted clutter covariances (PCCs) that are suitably designed off-line (e.g., in advance) using a discrete number of clutter to noise ratios (CNRs) and shifted antenna patterns (SAPs), where the SAPs are mathematical computational artifices not physically implemented. The on-line selection ...
]]> 8098196 http://www.patentstorm.us/patents/8098195/description.html

A transmitter provides a plurality of output signals. The transmitter includes a processor, a modulator, a first circuit, and a second circuit. The modulator provides a modulated signal responsive to the processor. The modulated signal includes an amplitude modulated radio frequency for transmitting a pulse. The first circuit provides a first output signal, responsive to and with higher power than the modulated signal. The first output signal has a first phase during transmitting of the ...
]]> 8098195 http://www.patentstorm.us/patents/8098194/description.html

A method for determining characteristics of a RCS test range may include vertically orienting a field probe including an elongated rigid body at a predetermined location within the RCS test range. The method may also include generating incident radar waves at a selected frequency and polarization and pivoting the field probe in a vertical direction broadside to the incident radar waves. The method may additionally include receiving return radar data scattered by the field probe during ...
]]> 8098194 http://www.patentstorm.us/patents/8098193/description.html

An ultra wide band (UWB) millimeter (mm) wave radar system includes a signal source having a control input, a GHz signal output and a frequency controlled output. A control loop is coupled between the GHz signal output and the control input including a frequency divider and a digitally controlled PLL that provides a locked output coupled to the control input of the signal source to provide frequency locked output signals that are discrete frequency swept or hopped. A frequency multiplier is ...
]]> 8098193 http://www.patentstorm.us/patents/8098192/description.html

A terrain awareness system includes a processor for receiving radar returns and providing terrain and/or obstacle alerts or warnings in response to the radar returns. The processor receives information from a database and the information is used to select the radar transmit function and/or the radar reception function to optimize the performance of the ...
]]> 8098192 http://www.patentstorm.us/patents/8098191/description.html

An apparatus and method for protecting against incoming projectiles comprising transmitting two radar waveforms, the first waveform comprising a pulsed continuous wave waveform, and the second waveform comprising a pulsed linear chirp waveform over a bandwidth, and based on returned radar data, causing deployment of a defense mechanism to intercept a detected incoming ...
]]> 8098191 http://www.patentstorm.us/patents/8098190/description.html

An emergency locator beacon testing and communication system is described. The system uses privately-owned Local User Terminals which provide direct feeds to a privately-operated beacon information processor having dedicated on-line servers for consolidating and providing access to beacon test information. The system receives beacon signals relayed through the Cospas-Sarsat satellite system, correlates the beacons' unique identification numbers (UIN's) in the received signals to the UIN's ...
]]> 8098190 http://www.patentstorm.us/patents/8098189/description.html

An antenna system for a weather radar system includes a first transceiver and a second transceiver. The polarization of the first transceiver is orthogonal to the polarization of the second transceiver. The first transceiver and the second transceiver are interlaced to occupy the same ...
]]> 8098189