Communications: directive radio wave systems and devices (e.g., radar, radio navigation) inventions 07/06

20060164281 - Dynamic antenna: A method and an antenna arrangement are disclosed for reducing the antenna radar cross section for an externally illuminating radar source. A radar pulse is transmitted with the antenna arrangement fully matched to achieve lowest possible power loss of the pulse. At all other times the antenna will be poorly...

20060164282 - Method and apparatus for protecting personnel from rf-triggered explosive devices (rted) using ultra-wideband (uwb) transmission: An ultra wideband (UWB) jamming system comprises a processor, a memory, a pulse generator, a UWB transmitter, and an UWB antenna. In an exemplary embodiment of the present invention, the RF signals of the RTED triggering device are evaluated and a set of interference parameters defined for the RF signal...

20060164283 - Method, system and apparatus for maximizing a jammer's time-on-target and power-on-target: A Method, System and Apparatus for Maximizing a Jammer's Time and Power on Target is disclosed. System and method of the present invention provide an enhanced and more efficient jamming system that can address multiple simultaneous targets, such that the time-on-targets are maximized given a fixed amount of available system...

20060164284 - Adaptive array: An adaptive antenna array has array elements arranged in element rows and element columns and subarrays arranged in subarray rows and subarray columns, for which the subarray phase centers have non-uniform spacing. The adaptive antenna array provides good detection and tracking performance when used in a radar system, while being...

20060164287 - Depth-based surveillance image reconstruction: A subject may be interrogated with electromagnetic radiation for producing image data representative of an image of the subject. First and second image data, produced based on reflectivity in first and second frequency ranges, may be related. In some examples, image data for one picture element may be produced based...

20060164285 - Depth-based surveillance imaging: A subject may be interrogated with electromagnetic radiation for producing image data representative of an image of the subject. First and second image data, produced based on reflectivity in first and second frequency ranges, may be related. In some examples, image data for one picture element may be produced based...

20060164286 - Frequency-based surveillance imaging: A subject may be interrogated with electromagnetic radiation for producing image data representative of an image of the subject. First and second image data, produced based on reflectivity in first and second frequency ranges, may be related. In some examples, image data for one picture element may be produced based...

20060164288 - Method and apparatus for interferometric radar measurement: In a method for interferometric radar measurement, at least two synthetic aperture radar (SAR) systems on satellite and/or missile-supported platforms illuminate a common surface area by means of microwave signals. A first SAR system sends a first radar signal on a first transmit frequency, and at least a second SAR...

20060164289 - Periphery monitoring system: In a periphery monitoring system for monitoring movements of a mobile object around an installation location of a Doppler sensor, a signal output from the Doppler sensor is subjected to an FFT analysis, and a total sum of the frequency levels of all of the frequency bands obtained through the...

20060164290 - Secure channel reservation: A beacon method for use in a wireless communication network involves populating a beacon frame's channel identification data with accurate data associated with use of a particular channel for wireless communication; populating the beacon frame's network identification data with data including at least one false data element, where the beacon...

20060164291 - System for identification using a transponder powered by solar cells: A system for identification of primarily man-made objects is described. A transponder at an object is arranged to be energized by an essentially infrared light beam at 700-1100 nm and sends messages to a reader via an information beam at 700-1100 nm. The transponder is powered by solar cells in...

20060164292 - Radar system comprising integrated data transmission: A radar system includes one or more individual radars, for example for motor vehicles, at least one system of which has both means for sensing and means for transmitting communications data, which means can be operated simultaneously....

20060164293 - Method for the observation of a number of objects: The invention relates to a method for the observation of a number of objects, which move in a space monitored by a number of sensors, are recorded by the sensors and followed with continuous updating of at least the sensor track defining the kinematics of the object, whereby those provided...

20060164294 - Angular resolution antenna system: For an angle-resolving antenna system, only two radar sensors are provided including separate transmitting and receiving antennas. The receiving antennas of the two radar sensors are switchable with reference to their main beam direction as well as to their beam width....

20060164295 - Method and device for calibrating sensors in a motor vehicle: A method and a device are described for calibrating at least two sensors, the sensors being of a different sensor type. The sensors may be located in or on a motor vehicle. It is possible to calibrate the at least two sensors in one operation by using a calibration object...

20060164297 - Method and system for real time navigation using satellite transmitted three-carrier radio signals and ionospheric corrections: The invention concerns a real-time navigation method for locating a rover using three-carrier radio signals of three different frequencies to determine the position of a user, transmitted by satellites. The method comprises a first step for determining “extra-wide lane” carrier phase ambiguity, a second step for estimating “wide-lane” phase ambiguity,...

20060164296 - Method and system of determining a hierarchical structure: Determining a hierarchical structure, possibly for delivery to an asset management system. Some exemplary embodiments may be a method comprising receiving a message originated by a data acquisition system and destined for a remote process controller (the receiving by a message router), using content of the message to determine a...

20060164298 - Array antenna receiver device: Calibration signals are distributed to the respective output signals of a plurality of antenna elements, thereby multiplexing the distributed calibration signals with the respective signals of the plurality of antenna elements. The calibration signals are extracted from the respective output signals of the multiplexing means and modulated, and the SIR...

20060164299 - Wireless local area network antenna system and method of use therefore: An embodiment of the present invention provides an apparatus, comprising a plurality of sub-arrays and at least one beamformer driving the plurality of sub-arrays, the at least one beamformer employing at least one phase shifter....

20060164300 - Transmit antenna: A transmit antenna for a surface wave radar system, including a linear array of active monopole antenna elements for transmitting signals in respective frequency ranges. The relative spacings and the relative heights of successive elements along the array have logarithmic relationships. The transmit antenna includes impedance matching circuits for the...

20060164301 - Method and a unit for beam control of an array antenna: A method of producing a digital beamformer signal by a number of antenna modules that are alike and by providing a system that implements the method. This is accomplished by introducing signal processing on each antenna module and by creating an asynchronous serial adding chain through the antenna modules to...

20060164302 - Providing advertisements to a computing device based on a predetermined criterion of a wireless access point: A geographic-based communications service system has a mobile unit for transmitting/receiving information, and access points connected to a network. The access points are arranged in a known geographic locations and transmit and receive information from the mobile unit. When one of the access points detects the presence of the mobile...

20060158369 - Automotive radar: An automotive radar which can process signals at high speed to detect a target in a wide angle range is provided. The automotive radar comprises a transmitting antenna which emits an electromagnetic wave, two receiving antennas which receive the electromagnetic wave reflected by a target, an antenna plate on which...

20060158370 - Distance measuring device: A distance measuring device includes: an impulse generator that generates an impulse; a transmission antenna that transmits the impulse generated by the impulse generator; a reception antenna that receives a reflected signal of the impulse transmitted from the transmission antenna and reflected by the object, and a leakage signal of...

20060158371 - Coupler with waveguide transition for an antenna in a radar-based level measurement system: A mechanism for coupling a coaxial waveguide to another waveguide. The mechanism includes a lower or matching waveguide and an impedance transformer. A coaxial port couples the coaxial waveguide to the matching waveguide. The matching waveguide has a waveguide impedance which is close to the impedance of the coaxial waveguide....

20060158372 - Determining usability of a navigation augmentation system: In one aspect, the invention is the system for assessing a navigation augmentation environment. The system includes a reference station for receiving messages from a satellite. The reference station has a known position. The system also includes a simulator for simulating an augmentation system by determining corrections based on the...

20060158373 - Positioning apparatus, positioning server apparatus, and positioning system: A mobile station (1) is provided having a GPS positioning unit (11) that receives electric waves from GPS satellites and computes the coordinates of an approximate location of a point to be positioned, performs interferometric positioning on the point to be positioned using correction data used for making a correction...

20060158374 - Smart antenna system wtih improved localization of polarized sources: An antenna array and signal preprocessing apparatus and method. The antenna array is a quadrature polarized array having two orthogonal electric dipoles and two orthogonal magnetic dipoles. The preprocessor is for preprocessing signals from the antenna, for obtaining spatial spectrum information for signal source location. The preprocessor comprises an autocorrelator,...

20060158375 - Direction finding: Direction findings by radio comprises arraigning an array of antennas, to receive signals from emitters, selecting individual antenna signals using a first multipole switch and determining, antenna signal strengths. Individual antenna signals are also selected by mutipole switch, which routes a selected signal to a third multipole switch. The third...

20060158376 - Digital terrestrial tv broadcast signal receiving system and digital terrestrial tv broadcast signal receiver: In a digital terrestrial TV broadcast signal receiving system comprised of a multi-directional antenna and a TV broadcast signal receiver which are connected by a cable, even when a level of a TV broadcast signal is lower and S/N is lower, signal receiving condition is made stable with no relation...

20060152402 - Robust detection technique of fixed and moving ground targets using a common waveform: Detection of moving targets in SAR images is improved by a radar on a moving platform for generating a focused synthetic aperture image of a scene The scene contains a target described by pixels within the SAR image. The radar has a monopulse antenna having a sum channel output and...

20060152403 - Method and apparatus for a frequency diverse array: Method and apparatus for a frequency diverse array. Radio frequency signals are generated and applied to a power divider network. A progressive frequency shift is applied to all radio frequency signals across all spatial channels. Amplitude weighting signals are applied for sidelobe control. Phase control is included for channel compensation...

20060152404 - System and method for radiating rf waveforms using discontinues associated with a utility transmission line: A method for processing radio frequency reflections is provided. The method applies an RF waveform to a transmission line that is a conductor used for providing a utility service. The method uses a RF waveform generator to transmit UltraWideband (UWB) RF waveforms through the conductors of a building. The RF...

20060152405 - Vehicle sensor system and process: A process of determining target parameters of an object within a field of detection of an automotive radar system, the process comprising the steps of: (a) establishing a target range from a sequence of ranges; (b) dwelling on the target range for an initial dwell time to obtain sensor data;...

20060152406 - Vehicle radar sensor assembly: A radar electronics module includes a support structure having a first surface having a plurality of recesses with a transmitter circuit board and a receiver circuit board disposed thereon. The transmitter and receiver circuit boards are disposed over the first surface of the supports structure such that transmitter and receive...

20060152407 - Method for combined use of a local positioning system, a local rtk system, and a regional, wide-area, or global carrier-phase positioning system: The present invention includes a method for a combined use of a local positioning system, a local RTK system and a regional, wide-area, or global differential carrier-phase positioning system (WADGPS) in which disadvantages associated with the local positioning system, the RTK and the WADGPS navigation techniques when used separately are...

20060152408 - Performance of a receiver in interfering conditions: A device 20 includes a receiver 21 for receiving and processing signals at least in a first frequency band and an antenna 216 which is connected to the receiver 21. In order to improve the performance of such a receiver, the device 20 in addition includes a tuning component 217...

20060152409 - Fast search gps receiver: A system within a multi-channel GPS receiver that searches for Global Positioning System (GPS) satellites by receipt of a plurality of GPS signals where each GPS signal corresponds to a GPS satellite having a GPS satellite identification number (ID) is shown. The system may include a controller in control of...

20060152410 - Antenna beam steering: An antenna steering system is provided that includes a plurality of gyro sensors fixedly located in close proximity to an antenna, for example a phased array antenna. The gyro sensors measure angular rotation of the antenna about an X-axis of the antenna, about a Y-axis of the antenna and about...

20060145912 - Compression and transmission of weather data: Weather radar reflectivity data is compressed by converting radar data to image pixels. Next, contours are traced from select groupings of the pixels. Control points are derived from the contours. The control points represent a compressed version of the radar data and may be used to recreate and fill the...

20060145913 - System for monitoring airport area: The invention relates to a system for recognizing obstructions and monitoring movements on or above an airport area (1) with sensors (2, 3, 4). According to the invention, a sensor (2) is a radar device having a plurality of antenna elements (12, 14), which are affixed to a curved surface...

20060145914 - Radar device and similar device: There is configured a radar or similar device that outputs received data that is currently being received and scan correlated image data in parallel with each other. Scan correlated image data and display image data resulting from received data from a display video memory 13 are input into a transitional...

20060145916 - Satellite positioning system enabled media measurement system and method: The present invention is directed to utilizing monitoring devices (200) for determining the effectiveness of various locations, such as media display locations (150) for an intended purpose (media display exposure). The monitoring devices (200) are distributed to a number of study respondents. The monitoring devices (200) track the movements of...

20060145915 - Interference management: A GPS system is configured to manage interference from disturbing signals. The system includes an antenna, an RF front end unit, a filtering unit, amplifying circuits, a carrier recovery unit, a correlation unit, and a calculating unit that performs range calculations. A multiplying unit, which is positioned between the carrier...

20060145917 - Gps receiver: It is an object of the present invention to provide a GPS receiver capable of deciding quickly a GPS satellite as a communication object while suppressing a consumption power. In order to attain the object, when a receiving portion 101 does not receive WNa in the navigation message transmitted from...

20060145918 - Steerable antenna and receiver interface for terrestrial broadcast: Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal,...

20060145919 - Beam architecture for improving angular resolution: An automotive radar system includes a beamformer circuit and a beamcombiner circuit. The beamformer circuit forms a plurality of antenna beams at a plurality of beam ports. The beam combiner circuit receives the beams provided thereto from the beamformer circuit and combines the beams to provide a desired number of...

20060145920 - Wavelength division multiplexing methods and apparatus for constructing photonic beamforming networks: Methods and apparatus for constructing phased array antenna beamforming networks are provided, that allow to scan multiple beams and select appropriate sets of delay lines simultaneously. The beamforming networks disclosed herein generate less losses than conventional ones and in some cases, do not require active switching, making them completely passive....

20060145921 - Electronically steerable sector antenna: An electronically steerable antenna system includes a plurality of panels that are coupled together to form an N-sided polygon. Each panel includes a plurality of microstrip conductor patches forming a phased array antenna. In a first embodiment that includes beam steering, each panel can selectively transmit or receive in a...

20060145922 - Tracking system utilizing antenna multiplexing: A wireless tracking system that uses antenna multiplexing. According to the invention, a system for tracking an object includes at least one transmitter, a plurality of receiver stations, and at least one processor. The transmitter is carried on or embedded within the object, and transmits an electromagnetic signal using multiple,...