Communications: directive radio wave systems and devices (e.g., radar, radio navigation) inventions 09/06

20060208939 - Interrogator of communication system: An interrogator that is to be incorporated in a communication system in which each of at least one transponder is operable, upon reception of a main carrier wave transmitted from the interrogator, to respond to the interrogator with a reflected wave that is generated by modulating the main carrier wave....

20060208940 - Radar: A radar includes a transmission section, a heterodyne reception section, a power supply section and a detection section. The transmission section emits a transmission wave to a target. The heterodyne reception section receives a reflected wave from the target. The power supply section supplies power to the reception section. A...

20060208941 - Adjusting processor clock information using a clock drift estimate: A navigation system comprises a global positioning satellite receiver to receive at least one global positioning satellite signal and to output global positioning satellite information. The navigation system further comprises a programmable processor, communicatively coupled to the global positioning satellite receiver, to execute software. The navigation system further comprises a...

20060208942 - Partial almanac collection system: A protocol independent interface for processing, within a mobile device, protocol aiding data received at a call processor with a Global Positioning System (“GPS”) interface, where the protocol aiding data is produced according to a Geolocation Server Station protocol is disclosed. The protocol independent interface may include a means for...

20060208943 - Location tagging using post-processing: A system is provided for storing positional data received from GPS signals in response to an event, and then processing that positional data at a later time to obtain detailed location information of the system at the time of the event. The received GPS signals may be decimated to a...

20060208944 - Phased array antenna system with adjustable electrical tilt: A phased array antenna system with adjustable electrical tilt includes an array (62) of antenna elements 621, to 6210. It has a splitter (44) dividing a radio frequency (RF) carrier signal into two signals between which a phase shifter (46) introduces a variable phase shift. Further splitters (52) and (54)...

20060208945 - Space / time / polarization adaptive antenna for esm / elint receivers: An adaptive array for detecting a signal of interest (SOI) that includes antenna elements, digital Finite Impulse Response (FIR) filters having programmable filter weights, a digital beamformer having programmable array weights and an adaptive control unit. Each antenna output signal is processed by an FIR filter to produce a filtered...

20060208946 - System and method for global positioning system repeater: An indoor GPS repeater unit comprising a directional receive aerial for receiving GPS signals from one or more satellites in a preselected area of the sky, a transmitting aerial for transmitting the received GPS signals; and, RF amplification means for enhancing the received GPS signals before transmitting into an indoor...

20060208947 - Apparatus and method for estimating direction of arrival of radio wave: A radio wave direction-of-arrival estimation apparatus and method that can estimate, at high speed and with good accuracy, the direction of arrival of a plurality of incoming waves having high correlation. The radio wave direction-of-arrival estimation apparatus includes: an array antenna constructed from a plurality of antenna elements; a receiver...

20060202883 - Electromagnetic radiation absorber: Please add the following abstract to the end of the application: An electromagnetic radiation absorber for absorbing radiation in the wavelength range λmin to λmax. The absorber has a conductor layer in contact with a dielectric layer. The conductor layer carries a plurality of apertures of sub-wavelength dimension and the...

20060202882 - Electromagnetic wave absorption complex, and method of producing the same: An electromagnetic wave absorber is formed by injection-molding a thermoplastic resin blended with approximately 20-60% by volume of soft magnetic material powder, and blended with a molding assistant and a kneading assistant. The electromagnetic wave absorber includes a unit cell having a bore extending from a top face to a...

20060202884 - Constant altitude plan position indicator for radars: A method and a system to process radar volume scan data along an azimuth angle of a radar, to interpolate the radar volume scan data taken from adjacent elevation angles along the azimuth angle of the radar to obtain radar data corresponding to a predetermined altitude along the azimuth angle,...

20060202885 - Operational bistatic radar system synchronization: A bistatic radar has a radar transmitter at a first location on a moving platform having a motion and a radar receiver at a second location, remote from the first location. The transmitter illuminates a target along an indirect path with an encoded radar signal. The target reflects the encoded...

20060202886 - Constant altitude plan position indicator display for multiple radars: A system and a method to receive radar data from a plurality of radars and to reduce the data from the plurality of radars to a common universal latitude-longitude coordinate frame. The plurality of radars may be positioned at separate geographical locations and may have one or more overlapping regions....

20060202887 - Gps-based positioning system for mobile gps terminals: The present invention discloses a GPS system that uses call-processor intelligence to determine the mode of operation of a GPS receiver located in a GPS terminal. The modes are selected based on the availability of network facilities, the GPS information that can be acquired, or user input requirements....

20060202888 - Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas: Locating satellites (e.g., GPS) are culled into a preferred group having a longest dwell time based on a time passing through an ellipsoid arc path through a cone of space, and communicated to mobile devices within a particular region (e.g., serviced by a particular base station). The culled locating satellites...

20060202889 - Mobile communications terminal having driving voltage control apparatus and method thereof: A mobile communication terminal including a power amplifier configured to amplify a power of a received signal and wirelessly transmit the amplified signal through an antenna, a high power detector configured to determine whether the amplified power of the signal exceeds a particular critical range, a detected voltage level converter...

20060202890 - Adaptive antenna/combiner for reception of satellite signals and associated methods: A communications device includes horizontally and vertically polarized antenna elements. A switching network is coupled to the antenna elements for switching signals received therefrom between first and second switching configurations. A combiner is coupled to the switching network for generating a first combined output signal having a first phase relationship...

20060202891 - Array antenna reception apparatus and received signal calibration method: An array antenna reception apparatus capable of calibrating a received signal with high accuracy without generating unnecessary radiations at an antenna section even when the power level of the received signal is low. In this apparatus, reference signal generation section (123) operates only when the power level of the received...

20060202892 - Enhanced switched-beam antenna arrangement: Switched-beam antenna arrangement means use a method of controlling an antenna pattern of such antenna arrangement means. Each antenna pattern of a predetermined number of fixed antenna patterns is allocated to a predetermined time slot of a time multiplexed signal. The switched-beam antenna arrangement means is switched to generate the...

20060202893 - Communications device with adaptive decoding and associated methods: In a communications device operating with a blind signal separation (BSS) processor, an initial mixing matrix is formed based upon the different summations of the source signals received by the antenna array. The initial mixing matrix is evaluated to determine a minimum rank that is necessary for at least one...

20060197697 - On-chip signal waveform measurement apparatus for measuring signal waveforms at detection points on ic chip: An on-chip signal waveform measurement apparatus mounted on an IC chip measures signal waveforms at detection points on the IC chip. A reference voltage generator successively generates reference voltages different from each other based on a predetermined timing signal, and Signal probing front-end circuits are mounted to correspond to the...

20060197698 - Sub-aperture sidelobe and alias mitigation techniques: Methods for mitigating sidelobes and aliases, providing levels of suppression in excess of 20 dB. The methods may include 1) a version of the CLEAN algorithm developed in radio astronomy, modified to work on sub-aperture images; 2) weighting functions based on the phase and amplitude statistics of the sub-aperture image...

20060197699 - Active module integrated into an electronically scanned antenna, and radar comprising such an antenna, applied especially to meteorology: Active module integrated into an electronically scanned antenna, and radar comprising such an antenna, applied especially to meteorology. The present invention relates to an active module integrated into an electronically scanned antenna. The active module, suitable for radiofrequency transmission, includes at least one power amplifier. This power amplifier delivers a...

20060197700 - Secondary radar message decoding: A method and apparatus for determining a value of each bit in a secondary radar response pulse train sampled at a bit rate greater than one sample per bit is provided. The received signal is sampled repeatedly over a bit period. A scale factor for a weighting function is defined...

20060197701 - Multistatic method and device for radar measuring a close distance: A multistatic detection device for measuring a distance to an object includes a transmitter and a receiver, each having a high-frequency oscillator and a pulse generator. The pulse generators can be supplied with synchronisation signals emitted by signals generators, the synchronisation signals being transmitted by a data bus common to...

20060197702 - Wireless host intrusion detection system: Systems and methods of detecting, and dealing with, a man-in-the-middle attack in wireless communications systems are described. The invention operates on the principle that if a mobile terminal is stationary there should be no reason for the access point to which it communicates to hand-over the connection. A hand-over, from...

20060197703 - Hybrid-phased communication array: A communication module is provided with a Transmit/Receive (T/R) element fabricated from psuedomorphic HEMT, High Electron Mobility Transistor technology (PHEMT). The T/R element drives multiple Radio Frequency MEMS switch-based phasing elements. Each of the phasing elements connects to a corresponding radiation element. A large quantity of the communication elements can...

20060197704 - Measuring distance using wireless communication: A method of estimating the distance between a first wireless communication terminal and a second wireless communication terminal includes: receiving a signal at the first terminal, processing the received signal including performing a demodulation operation to produce a demodulated signal; and resolving the demodulated signal into a plurality of components...

20060197697 - On-chip signal waveform measurement apparatus for measuring signal waveforms at detection points on ic chip: An on-chip signal waveform measurement apparatus mounted on an IC chip measures signal waveforms at detection points on the IC chip. A reference voltage generator successively generates reference voltages different from each other based on a predetermined timing signal, and Signal probing front-end circuits are mounted to correspond to the...

20060197698 - Sub-aperture sidelobe and alias mitigation techniques: Methods for mitigating sidelobes and aliases, providing levels of suppression in excess of 20 dB. The methods may include 1) a version of the CLEAN algorithm developed in radio astronomy, modified to work on sub-aperture images; 2) weighting functions based on the phase and amplitude statistics of the sub-aperture image...

20060197699 - Active module integrated into an electronically scanned antenna, and radar comprising such an antenna, applied especially to meteorology: Active module integrated into an electronically scanned antenna, and radar comprising such an antenna, applied especially to meteorology. The present invention relates to an active module integrated into an electronically scanned antenna. The active module, suitable for radiofrequency transmission, includes at least one power amplifier. This power amplifier delivers a...

20060197700 - Secondary radar message decoding: A method and apparatus for determining a value of each bit in a secondary radar response pulse train sampled at a bit rate greater than one sample per bit is provided. The received signal is sampled repeatedly over a bit period. A scale factor for a weighting function is defined...

20060197701 - Multistatic method and device for radar measuring a close distance: A multistatic detection device for measuring a distance to an object includes a transmitter and a receiver, each having a high-frequency oscillator and a pulse generator. The pulse generators can be supplied with synchronisation signals emitted by signals generators, the synchronisation signals being transmitted by a data bus common to...

20060197702 - Wireless host intrusion detection system: Systems and methods of detecting, and dealing with, a man-in-the-middle attack in wireless communications systems are described. The invention operates on the principle that if a mobile terminal is stationary there should be no reason for the access point to which it communicates to hand-over the connection. A hand-over, from...

20060197703 - Hybrid-phased communication array: A communication module is provided with a Transmit/Receive (T/R) element fabricated from psuedomorphic HEMT, High Electron Mobility Transistor technology (PHEMT). The T/R element drives multiple Radio Frequency MEMS switch-based phasing elements. Each of the phasing elements connects to a corresponding radiation element. A large quantity of the communication elements can...

20060197704 - Measuring distance using wireless communication: A method of estimating the distance between a first wireless communication terminal and a second wireless communication terminal includes: receiving a signal at the first terminal, processing the received signal including performing a demodulation operation to produce a demodulated signal; and resolving the demodulated signal into a plurality of components...