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Match Document Document Title
7336223 System and method for establishing the instantaneous speed of an object  
A system for establishing the speed, in a safe manner, of an object ( 1 ) which is travelling along a known trajectory, including a device ( 3, 7 ) for locating the object and direction of its...
7269512 Information processing apparatus and GPS positioning method  
An information processing apparatus is configured to measure a Doppler shift in the frequency of a radio wave from a GPS (Global Positioning System) satellite and a pseudo-distance between the...
7236883 Aiding in a satellite positioning system  
The invention relates to an aided Global Positioning System (GPS) subsystem within a wireless device. The wireless device includes a wireless processing section capable of receiving signals from a...
7200414 Client-aiding with cellphones in a 150-KM radius area  
A cellphone system comprises a GPS reference station located with a telephone cell site. Such GPS reference station tracks the GPS satellites visible to its local area and estimates the Doppler for...
7133772 Method and apparatus for navigation using instantaneous Doppler measurements from satellites  
A method and apparatus for locating position of a satellite signal receiver is described. In one example, a Doppler offset for each of a plurality of satellite signals relative to the satellite...
7129839 Device for monitoring an area  
The present invention relates to a monitoring device ( 1 ) with a transmitter unit ( 2 ) and a receiver unit ( 3 ) for monitoring an area. Slotted cables serve as antennas. According to the...
7109920 Moving platform position determination system and method  
A system and method for determining a position of a moving platform are provided. The method includes transmitting a carrier signal from one of the moving platform and a stationary platform,...
7082155 Reception level measuring system  
A reception level measuring system in which a base station in a code division multiple access (CDMA) mobile communication system measures a reception level of a signal from a mobile station. The...
7035315 Doppler corrected communications receiver and method of removing doppler frequency shift  
A method and communications receiver is disclosed that removes Doppler frequency shift in a spread spectrum communications signal. A pilot channel rake section has I and Q Doppler estimation...
7012563 Method and system for frequency drift prediction  
A method ( 200 ) of frequency drift prediction for use by a positioning receiver ( 106 ) can include the steps of determining ( 202 ) a moving average of a frequency error, determining ( 206 ) a...
6965754 Satellite positioning system receiver with reference oscillator circuit and methods therefor  
A method in a location enabled mobile wireless receiver having an oscillator, including determining a change in cellular network based frequency error of the oscillator ( 250 ), based on a...
6952180 Method and apparatus for determination of position  
Method and apparatus for determination of positions of a moving object on the basis of a selection and storing a current position (Px) as a waypoint (Wx) if the following criteria are fulfilled:...
6937865 Position detection system integrated into mobile terminal  
A wireless communications mobile terminal conserves bandwidth by determining which position detection assisting devices within a position detection system are available for use and limiting...
6933886 Signal acquisition using data bit information  
Techniques are provided for aiding in acquiring a signal using the data bit information that is associated with each signal source. One aspect of the invention is to use the data bit information...
6839547 Enhanced GPS receiver utilizing wireless infrastructure  
A locator using Navstar constellation signals for determining geographical location of a mobile receiver. The locator is integrated with a mobile unit of a cellular network, which derives its...
6839021 Method and apparatus for determining time in a satellite positioning system  
A method and apparatus for determining a reference time associated with a satellite positioning system. In turn, the reference time, in one embodiment, may be used to determine other navigational...
6829558 Method for reducing position uncertainty of a portable inertial navigation device  
A first set of coordinates ( 100 ) of a device and an estimated positional error (“EPE”) radius ( 102 ) is measured. An EPE circle ( 104 ) is derived, in which the device is approximately...
6806828 Passive range and angle measurement system and method  
A method determines range from a moving platform to an emitter. The method receives a RF signal from the emitter; counts a number of phase reversals of the received RF signal during a period of...
6775615 Method of obtaining a position fix in a GPS receiver and a GPS receiver for the same  
A method of obtaining a position fix in a GPS receiver is disclosed together with a GPS receiver for the same. The method comprising the steps of (i) providing an estimate of clock offset between...
6771211 Method, system and devices for positioning a receiver  
The invention relates to a method for positioning a receiver receiving code modulated signals transmitted by satellites and formed by an individual code for each satellite. In order to provide a...
6720916 Apparatus and method for performing open loop tracking of a signal  
A radio occultation instrumentation system includes a first satellite arranged with a transmitter for transmitting a signal with a carrier frequency and a second satellites arranged with a receiver...
6720915 Methods and apparatuses for using assistance data relating to satellite position systems  
Methods and apparatuses to obtain an ordered set of satellite positioning system (SPS) satellites, in view of a mobile SPS receiver, via one or two-way communication with the mobile SPS receiver....
6718174 Method and apparatus for estimating velocity of a terminal in a wireless communication system  
Techniques to estimate the velocity of a terminal in a wireless communication system. Movement by the terminal results in a Doppler shift in the frequency of each transmitted signal received at the...
6680696 Positioning satellite system for measuring position of signal source  
A satellite system includes a signal source located on a surface of the earth, a surface of water, or in air; an orbiting satellite for measuring a position of the signal source, having a GPS...
6661371 Oscillator frequency correction in GPS signal acquisition  
A method ( 50 ) for correcting oscillator frequency error in GPS signal acquisition includes a first step ( 52 ) of receiving at least one broadcasted GPS signal. A next step ( 54 ) includes...
6650285 Method and apparatus for rapidly estimating the doppler-error and other receiver frequency errors of global positioning system satellite signals weakened by obstructions in the signal path  
Frequency-offset components are extracted from a set of digitized samples of signals transmitted by a satellite. The samples are squared to produce squared samples and decimated. The squared...
6650282 Positioning equipment  
The invention relates to a receiver of a satellite positioning system. In order to obtain reliable positions with a low sampling rate said receiver comprises: reception means ( 3 ) for receiving...
6636574 Doppler spread/velocity estimation in mobile wireless communication devices and methods therefor  
A method for estimating Doppler spread in mobile wireless communication devices, for example in CDMA or W-CDMA cellular communication systems, with improved noise immunity. The Doppler spread...
6628231 Location of radio frequency emitting targets  
A method is described which enables the location of a radio frequency emitting target in absolute or relative GPS coordinates from a single airborne platform within a few seconds. The method uses a...
6611757 Global positioning system tag system  
A system for determining the location of an object includes an interrogator remote from the object and a transponder located at the object. The interrogator receives GPS signals and transmits...
6593879 Using the global positioning satellite system to determine attitude rates using doppler effects  
In the absence of a gyroscope, the attitude and attitude rate of a receiver can be determined using signals received by antennae on the receiver. Based on the signals received by the antennae, the...
6538600 Wireless assisted GPS using a reference location  
The invention is directed towards a method for estimating a PRN synchronization and Doppler shift of a satellite signal at a reference location within a cell and sector of where a wireless terminal...
6516272 Positioning and data integrating method and system thereof  
An improved positioning and data integrating process and system can substantially solve the problems encountered in system integration for personal hand-held applications, air, land, and water...
6496778 Real-time integrated vehicle positioning method and system with differential GPS  
A real-time integrated vehicle positioning method and system with differential GPS can substantially solve the problems encountered in either the global positioning system-only or the inertial...
6392590 Positioning device and method capable of reducing the amount of operation  
A Positioning device includes a downconversion unit receiving positioning signals from satellites and converting the signals to an intermediate-frequency signal, and carrier search units using an...
6366762 System and method for measuring round trip delay on the paging and access channels  
A system and method for determining a round trip delay of signals transmitted between first and second objects, such as a satellite and a mobile telephone, that move relative to each other. A first...
6317078 Method and device for reception processing of a GPS satellite L2 signal  
A method for position determination with the aid of GPS satellites, including reception processing of a GPS satellite signal L2 modulated by an encrypted code Y having a key not available from the...
6317077 Method and system of determining user terminal position using multiple satellites  
In a satellite communication system (20), a method (50) and system of locating terrestrial-based user terminals (UTs). A UT (23) is located by a two-tier estimation procedure. Under this procedure,...
6307503 Method and system of determining user terminal position using a measured signal propagation delay and Doppler shift of a communications link  
A system (20) and method (40) for determining a user terminal (23) location on the surface of the earth relies on the signal propagation delay and Doppler shift of radio frequency (RF)...
6300899 Fixed site data-aided GPS signal acquisition method and system  
A fixed site data-aided system and method of GPS signal acquisition from a plurality of broadcasted GPS signals includes lengthening a pre-detection integration interval so that weak signals can be...
6298238 Fast user terminal position determination in a satellite communications system  
An apparatus, method, and process for quickly and accurately determining the position of a user terminal in a satellite communications system. An initial coarse estimate of the radius of the Earth...
6297770 Global positioning system and global positioning method with improved sensitivity by detecting navigation data inversion boundaries  
A Global Positioning System (GPS) forms a C/A code sequence by summing, beginning from a polarity inversion boundary determined by a correlation peak position detector, chips at corresponding...
6288674 Wireless communication system utilizing doppler diversity  
In one aspect, the present invention discloses a communication device (see, for example, FIG. 5), such as a mobile unit (e.g., a cellular telephone handset) or a stationary unit (e.g., a cellular...
6285318 Micro-miniature beacon transmit-only geo-location emergency system for personal security  
Novel transmit-only geo-location techniques which can operate synergistically with existing or newly designed satellite or ground-based wireless communications networks using micro-miniature...
6285316 Locating a mobile unit using signals from both mobile beacons and stationary beacons  
A method and system for finding the position of a mobile unit with respect to the satellites of a satellite network such as the Global Positioning System and with respect to the base stations of a...
6281837 Auxiliary system for assisting a wireless terminal in determining its position from signals transmitted from a navigation satellite  
A wireless terminal and auxiliary system are disclosed that enable the wireless terminal to determine its location based on signals transmitted from navigation satellites. In particular, the tasks...
6259400 Fast acquisition of GPS signal corrupted by doppler or time delay effects  
An RF translator is placed on an artillery shell. The RF translator receives a GPS signal, converts the GPS signal to an S band signal, and then transmits the S band signal. The S band signal is...
6205400 Vehicle positioning and data integrating method and system thereof  
A vehicle positioning and data integrating process and system can substantially solve the problems encountered in avionics system integration, which employs integrated global positioning...
6201973 Mobile communication apparatus  
A mobile communication apparatus having a transceiver is provided with a location calculator which calculates a location of the mobile communication apparatus based on three radio control signals...
6195040 Satellite signal receiver with position extrapolation filter  
A GPS satellite signal receiver fitted on an aircraft. Velocity measurements are used to obtain position values at a sufficient rate to provide position extrapolation while waiting for the next...
Matches 1 - 50 out of 77 1 2 >