Gregory C. Issing

US Patent 7088288 Method and circuit for controlling an antenna system

US Patent 7091904 Tracker architecture for GPS systems

US Patent 7098846 All-weather precision guidance and navigation system

US Patent 7102563 Methods and apparatuses of estimating the position of a mobile user in a system of satellite differential navigation

US Patent 7102567 System and method for estimating clock acceleration and location determination

US Patent 7102569 Method for calibrating smart antenna array systems in real time

US Patent 7109919 Beamformer for multi-beam broadcast antenna

US Patent 7113127 Wireless vehicle-monitoring system operating on both terrestrial and satellite networks

US Patent 7123187 Technique for determining relative yaw using phase windup

US Patent 7123200 Sea surface antenna

US Patent 7126527 Method and apparatus for mobile device location via a network based local area augmentation system

US Patent 7126530 Non-coherent high-power directed-energy system and method

US Patent 7126532 Apparatus for tracing an optimal direction to receive satellite signal in active phase array antenna system

US Patent 7129890 Dynamic beamforming for ad hoc networks

US Patent 7132979 Calibration apparatus for a switchable antenna array, and an associated operating method

US Patent 7132980 Multi-function device with positioning system and shared processor

US Patent 7142159 Pseudolite navigation system

US Patent 7145507 Vehicle locating system using GPS

US Patent 7145508 Radio frequency signal receiving apparatus, a radio frequency signal transmitting apparatus, and a calibration method

US Patent 7148843 Enhanced real time kinematics determination method and apparatus

US Patent 7148844 Global positioning apparatus and method for using a temperature compensated oscillator to perform a position fix

US Patent 7154437 Method and system for processing positioning signals based on predetermined message data segment

US Patent 7158079 Simple device and method to return a user to a location

US Patent 7158884 Saddle-type vehicle equipped with a navigation system

US Patent 7162366 Saddle-type vehicle equipped with a navigation system

US Patent 7164383 Navigation system using locally augmented GPS

US Patent 7170447 Method and apparatus for processing navigation data in position determination

US Patent 7176834 Satellite positioning system enabled media measurement system and method

US Patent 7180446 Continuous integration based satellite navigational signal acquisition

US Patent 7183971 Hybrid translator in a global positioning system (GPS)

US Patent 7183972 Communications system that reduces auto-correlation or cross-correlation in weak signals

US Patent 7187324 Radiowave monitoring method and apparatus

US Patent 7193559 Inertial GPS navigation system with modified kalman filter

US Patent 7196660 Method and system for determining time in a satellite positioning system

US Patent 7199754 System and methods for determining the location dynamics of a portable computing device

US Patent 7202814 System and method for presence-based area monitoring

US Patent 7202816 Utilization of the approximate location of a device determined from ambient signals

US Patent 7205935 Method and apparatus for processing signals for ranging applications

US Patent 7205936 Transmitting and receiving apparatus and method in adaptive array antenna system capable of real-time error calibration

US Patent 7205937 Non-multiple delay element values for phase shifting

US Patent 7205938 Wireless node location mechanism responsive to observed propagation characteristics of wireless network infrastructure signals

US Patent 7209076 Cross-correlation mitigation method and apparatus for use in a global positioning system receiver

US Patent 7209830 Saddle-type vehicle equipped with a navigation system

US Patent 7212156 Multi-function device with positioning system and shared processor

US Patent 7215280 Satellite positioning system enabled media exposure

US Patent 7218275 Test apparatus and control method thereof for use with location based service system capable of optimizing location based service by adjusting maximum antenna range

US Patent 7218276 Positional information determining apparatus

US Patent 7227498 Wireless coordination and management system

US Patent 7227499 Dual platform location-relevant service

US Patent 7233285 Correlation interferometer geolocation

US Patent 7233286 Calibration of a device location measurement system that utilizes wireless signal strengths

US Patent 7245253 Method and apparatus for processing of satellite signals without time of day information

US Patent 7245254 Electronic exercise monitor and method using a location determining component and a pedometer

US Patent 7248216 Calibration apparatus and method for array antenna

US Patent 7250906 Methods and apparatus for identifying asset location in communication networks

US Patent 7250907 System and methods for determining the location dynamics of a portable computing device

US Patent 7256732 Method and apparatus for location-based triggering in an assisted satellite positioning system

US Patent 7262731 Method and system for optimizing location-based service by adjusting maximum antenna range

US Patent 7262732 Method and apparatus for fast satellite acquisition via signal identification

US Patent 7268726 Method and apparatus for correction of quantization-induced beacon beam errors

US Patent 7268728 Moving transmitter correlation interferometer geolocation

US Patent 7274329 Method and apparatus for reducing quantization-induced beam errors by selecting quantized coefficients based on predicted beam quality

US Patent 7274330 Beam switching antenna system and method and apparatus for controlling the same

US Patent 7277054 Method for positioning, a positioning system, and an electronic device

US Patent 7280073 Method and system for determining direction of transmission using multi-facet antenna

US Patent 7286082 Method and apparatus for wide area augmentation system having GEO uplink subsystem with enhanced clock steering

US Patent 7289061 Generating high precision ionospheric ground-truth measurements

US Patent 7292185 Attitude determination exploiting geometry constraints

US Patent 7292186 Method and system for synchronizing multiple tracking devices for a geo-location system

US Patent 7298319 Automatic decorrelation and parameter tuning real-time kinematic method and apparatus

US Patent 7298320 Waterproof combined global positioning system receiver and two-way radio and method of waterproof enclosure fabrication

US Patent 7298321 Satellite positioning system receivers and methods

US Patent 7298323 Apparatus and method for locating user equipment using global positioning system and dead reckoning

US Patent 7298328 Systems and methods for geographic positioning using radio spectrum signatures

US Patent 7304605 Method of calibrating an adaptive antenna array of a satellite navigation system

US Patent 7310064 Rebroadcasting method and system for navigation signals

US Patent 7312752 Wireless position location and tracking system

US Patent 7315277 Bit depth reduction for analog to digital conversion in global positioning system

US Patent 7317418 Global positioning apparatus and method for using a temperature compensated oscillator to perform a position fix

US Patent 7327311 Method of despreading GPS signals

US Patent 7333053 Signal path system and method for a ranging signal receiver

US Patent 7336224 Satellite positioning system receivers and methods

US Patent 7339520 Phased array terminal for equatorial satellite constellations

US Patent 7342534 Phased array radio frequency pulse generator

US Patent 7352323 Positional information determining apparatus

US Patent 7362262 Method and apparatus for providing an integrated communications, navigation and surveillance satellite system

US Patent 7362263 Keeping accurate time for a hybrid GPS receiver and mobile phone when powered off

US Patent 7362264 Interference management

US Patent 7363124 Disperse, aggregate and disperse (DAD) control strategy for multiple autonomous systems to optimize random search

US Patent 11183757 Transmitting and receiving apparatuses and methods for a phased array antenna

US Patent 7365678 Determining usability of a navigation augmentation system

US Patent 7382313 Method for absolute calibration of global navigation satellite system antennas

US Patent 7391367 Optically frequency generated scanned active array

US Patent 7394424 Methods and apparatus for implementing a wideband digital beamforming network

US Patent 7400292 GPS Navigation system with integrity and reliability monitoring channels

US Patent 7400294 Portable reference station for local differential GPS corrections

US Patent 7403156 Method and system for performing digital beam forming at intermediate frequency on the radiation pattern of an array antenna

US Patent 7405695 Switching circuit and control method of antenna module

US Patent 7408502 Satellite positioning system enabled business location planning

US Patent 7408505 Multi-function device with positioning system and shared processor

US Patent 7411549 Calibration of a device location measurement system that utilizes wireless signal strengths

US Patent 7414573 Method and apparatus for providing an integrated communications, navigation and surveillance satellite system

US Patent 7414576 Precision RF antenna pointing

US Patent 7420510 Location and tracking of people with combined use of RF infrastructure and dead reckoning modules

US Patent 7427952 Augmentation of commercial wireless location system (WLS) with moving and/or airborne sensors for enhanced location accuracy and use of real-time overhead imagery for identification of wireless device locations

US Patent 7443338 Navigation apparatus

US Patent 7443339 Cross-correlation suppression technique for position location receivers

US Patent 7443340 Method and apparatus for generating and distributing satellite tracking information

US Patent 7443342 Reception time determining apparatus and distance measuring apparatus using the same

US Patent 7446700 Methods and apparatus for decreasing time to first fix of GPS receiver

US Patent 7446706 Method and apparatus for processing navigation data in position determination

US Patent 7450060 Signal inconsistency detection of spoofing

US Patent 7450062 Keeping accurate time for a hybrid GPS receiver and mobile phone when powered off

US Patent 7453397 System controllable by an external microcontroller via an interface

US Patent 7453399 Antenna processing method for potentially non-centered cyclostationary signals

US Patent 7456782 Timing calibration for fast signal reacquisition in navigational receivers

US Patent 7463189 Satellite-based positioning system improvement

US Patent 7463191 Antenna beam steering and tracking techniques

US Patent 7466265 GPS receiver with extended hot start capability

US Patent 7468691 Positioning device, positioning control method, and recording medium

US Patent 7468695 GPS attitude determination system and method using baseline extension

US Patent 7474260 Adjustable time-division multiplexing receiver for receiving satellite signal and method for the same

US Patent 7495610 System and method for decimating global positioning system signals

US Patent 7498981 Method and apparatus for real-time digital processing of satellite positional signals for fast acquisition and low SNR tracking

US Patent 7508341 Method and arrangements for the transmission of pseudolite trajectories within navigation data of a satellite navigation system

US Patent 7515104 Structured array geolocation

US Patent 11187775 Time of arrival (TOA) measurements

US Patent 7525482 Mitigation of array factor distortions for GPS and broadband reception

US Patent 7528774 Apparatus for measuring azimuth by using phase difference and method of using the same

US Patent 7528776 Beacon-assisted precision location of untethered client in packet networks

US Patent 7532170 Conformal end-fire arrays on high impedance ground plane

US Patent 7535416 Dual platform location-relevant service

US Patent 7535419 Method for data exchange between military aircraft and device for carrying out this method

US Patent 7545323 Phased array antenna systems and methods

US Patent 7545324 Phased array antenna systems and methods

US Patent 7545326 Wireless tracking system and method with multipath error mitigation

US Patent 7551126 GNSS sample processor for determining the location of an event

US Patent 7551129 Virtual real-time clock based on time information from multiple communication systems

US Patent 7551131 Wireless communication device and associated method including control of positioning-system receiver and shared oscillator

US Patent 7551132 GPS receiver with fast acquisition time

US Patent 7551133 GPS navigation using interacting multiple model (IMM) estimator and probabilistic data association filter (PDAF)

US Patent 7554487 Method and system for determining time in a satellite positioning system

US Patent 7564401 Signal inconsistency detection of spoofing

US Patent 7570203 Method for adjusting the integrity alert threshold in a satellite navigation system

US Patent 7570208 Unassisted indoor GPS receiver

US Patent 7570209 Antenna system including a power management and control system

US Patent 7573422 Advanced power management for satellite positioning system

US Patent 7576689 Method and apparatus for controlling a frequency source

US Patent 7576692 Method for positioning, a positioning system, and an electronic device

US Patent 7579984 Ultra-tightly coupled GPS and inertial navigation system for agile platforms

US Patent 7579985 Positioning apparatus, control method of positioning apparatus, control program for positioning apparatus, and computer readable recording medium for storing control program for positioning apparatus

US Patent 7583225 Low earth orbit satellite data uplink

US Patent 7586439 Satellite positioning system enabled media measurement system and method

US Patent 7592951 Device and method for minimizing the number of crystal oscillators used in an integrated navigation receiver and cellphone

US Patent 7598909 Keeping accurate time for a hybrid GPS receiver and mobile phone when powered off

US Patent 7602338 Wireless position location and tracking system

US Patent 7605753 Wireless communication device and method for reducing interference in a receiver

US Patent 7616154 Beam switching antenna system and method and apparatus for controlling the same

US Patent 7616156 Wireless position location and tracking system

US Patent 7623065 Refractivity retrieval via direct measurement of GNSS bending angle

US Patent 7623070 Cross-correlation mitigation method and apparatus for use in a global positioning system receiver

US Patent 7626545 Wireless position location and tracking system

US Patent 7626546 Methods and systems for detection and location of multiple emitters

US Patent 7633442 Satellite communication subscriber device with a smart antenna and associated method

US Patent 7642954 Positioning apparatus, control method of positioning apparatus, control program for positioning apparatus, and computer-readable recording medium having control program for positioning apparatus recorded therein

US Patent 7642961 Remote control antenna positioning system

US Patent 7656350 Method and apparatus for processing a satellite positioning system signal using a cellular acquisition signal

US Patent 7656351 Method of designing a low cost multibeam phased array antenna for communicating with geostationary satellites

US Patent 7659849 Frequency scanning antenna

US Patent 7663539 Automatic decorrelation and parameter tuning real-time kinematic method and apparatus

US Patent 7671795 Wireless communications device with global positioning based on received motion data and method for use therewith

US Patent 7675462 Method and system for the alignment of an earth station antenna with a satellite antenna

US Patent 7679561 Systems and methods for positioning using multipath signals

US Patent RE41175 GPS-enhanced system and method for automatically capturing and co-registering virtual models of a site

US Patent 7692587 Rapid acquisition and correlation of synchronization codes for mobile devices with limited memory and computational power

US Patent 7701390 Time adjustment device, timekeeping device with a time adjustment device, and a time adjustment method

US Patent 7701392 Antenna system

US Patent 7714779 Method and apparatus for providing a global secure user plane location (SUPL) service

US Patent 7719466 Communications systems that reduces auto-correlation or cross-correlation in weak signals

US Patent 7728767 Phase ambiguity resolution method for a satellite based positioning system

US Patent 7728769 Adaptive processing method of clutter rejection in a phased array beam pattern

US Patent 7741994 Ionospheric error prediction and correction in satellite positioning systems

US Patent 7741997 Multiple-beam phased array with switchable element areas

US Patent 7746271 Method for determining the global position

US Patent 7755544 Method for correcting reference position information, server system, and reference position information correcting system

US Patent 7760139 GPS based attitude reference system

US Patent 7764226 Universal digital channel for receiving signals of global navigation satellite systems

US Patent 7764227 Positioning apparatus

US Patent 7768451 Methods and apparatus for geometry extra-redundant almost fixed solutions

US Patent 7786932 Time-to-first-fix for position determination

US Patent 7786933 Digital beam-forming apparatus and technique for a multi-beam global positioning system (GPS) receiver

US Patent 7791537 Radio monitoring apparatus and method

US Patent 7800535 Multi-function device with positioning system and shared processor

US Patent 7800537 System and method for antenna tracking

US Patent 7821452 Positioning device, positioning control method, and recording medium

US Patent 7825855 Assisted global positioning system location determination

US Patent 7830306 Positioning apparatus, control method of positioning apparatus, control program for positioning apparatus, and computer readable recording medium for storing control program for positioning apparatus

US Patent 7830307 Array antenna and a method of determining an antenna beam attribute

US Patent 7839327 Method and apparatus for processing navigation data in position determination

US Patent 7839329 Positioning system and method thereof

US Patent 7839331 Satellite clock prediction

US Patent 7852263 Method for transmitting satellite data

US Patent 7864109 Method and spread spectrum software receiver for satellite navigation

US Patent 7864111 Arrangement for steering radiation lobe of antenna

US Patent 7884762 Method and apparatus for receiving a global positioning system signal using a cellular acquisition signal

US Patent 7889122 Refractivity retrieval via direct measurement of GNSS bending angle

US Patent 7898473 Method for positioning, a positioning system, and an electronic device

US Patent 7898479 System and method for signal extraction and angle of arrival determination

US Patent 7903025 Multiple clock signal generation from a common oscillator

US Patent 7911381 Virtual real-time clock based on time information from multiple communication systems

US Patent 7916075 Satellite signal adaptive time-division multiplexing receiving device

US Patent 7916079 GPS signal samples with timing data

US Patent 7932859 Method and apparatus for satellite positioning system time resolution

US Patent 7956804 Frequency aiding method and system for navigation satellite receiver with crystal oscillator frequency hysteresis

US Patent 7961143 Partial search carrier-phase integer ambiguity resolution

US Patent 7961147 Long baseline phase interferometer ambiguity resolution using frequency differences

US Patent 7965236 Apparatus and method for measuring moving distance in mobile communication system

US Patent 7969356 Satellite positioning system receivers and methods

US Patent 7969358 Compensation of beamforming errors in a communications system having widely spaced antenna elements

US Patent 7973714 Beam switching antenna system and method and apparatus for controlling the same

US Patent 7973716 Systems and methods for transparency mapping using multipath signals

US Patent 7978127 Mobile unit positioning device

US Patent 7994971 GPS-based measurement of roll rate and roll angle of spinning platforms

US Patent 7994976 Satellite signal adaptive time-division multiplexing receiver and method

US Patent 7999739 1D or 2D goniometry method of diffuse sources

US Patent 8009087 Positioning system and method thereof

US Patent 8009088 Method and transit time tester for monitoring the transit time of small-sized goods to be conveyed, particularly of letters and similar mail items

US Patent 8009089 Multiple clock signal generation from a common oscillator

US Patent 8009100 Radio frequency emitter detection and location method and system