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7158080 |
Method and apparatus for using long term satellite tracking data in a remote receiver
Method and apparatus for using long term satellite tracking data in a remote receiver is described. In one example, long term satellite tracking data is received at a remote receiver from a server....
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7154438 |
Prioritized list of potential culled satellite ephemeris information for quick, accurate assisted locating satellite location determination
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...
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7148844 |
Global positioning apparatus and method for using a temperature compensated oscillator to perform a position fix
A global positioning receiver unit utilizes a temperature compensated oscillator and a unit controller. The temperature compensated oscillator generates a clock signal, and the unit controller is...
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7142155 |
GPS receiver
A GPS receiver calculates a position with as high accuracy as possible by appropriately setting a threshold of a reception level of the signal from each GPS satellite and a DOP threshold based on...
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7142156 |
System and method for providing time to a satellite positioning system (SPS) receiver from a networked time server
System and method for enabling signal acquisition in a satellite positioning system (SPS) when signals from SPS satellites are attenuated by the operating environment of a SPS receiver. A preferred...
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7142157 |
Determining position without use of broadcast ephemeris information
Devices and methods are described for determining position information without broadcast ephemeris data for extended time periods. A server or client device receives or collects historical state...
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7133745 |
Method for compensating rotational position error of robot cleaner
A method for compensating a rotational position error of a robot cleaner is disclosed to reduce a rotational position error of a robot cleaner by compensating an offset value of a gyro sensor of...
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7127351 |
Combined parallel and sequential detection for GPS signal acquisition
A two part signal acquisition process includes a parallel signal detection process and signal verification/false alarm rejection process. A massively parallel architecture of acquisition...
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7123190 |
Skipping z-counts and accurate time in GPS receivers
A navigation-satellite receiver comprises high-sensitivity radio frequency front-end and navigation processor associated with a client CPU. The client CPU runs an operating system that serially...
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7119742 |
Method and apparatus for estimating position utilizing GPS satellite signal
The invention is directed to an apparatus and method for determining or estimating position using GPS signals. The system includes a receiver such as a GPS receiver for receiving GPS signals and a...
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7116270 |
Method and system for multipath detection
A navigation system including a GPS receiver; a variable directivity antenna capable of forming a null point in at least one direction; a null point setting unit for setting the null point of the...
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7113128 |
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...
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7102491 |
Device for detecting the theft/theft of a vehicle and method of detecting the theft
A theft detecting device has a position data-obtaining and communication arrangements which are energized after it is determined that “the automobile is stolen and is now in a stationary state”...
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7102566 |
GPS for telephone line records
Methods and systems are disclosed for enhancing telephone line records with Global Positioning System coordinates. One embodiment acquires Global Positioning System information and provides the...
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7102567 |
System and method for estimating clock acceleration and location determination
A method and a system for a location determination (a) acquire a first positioning signal; (b) analyze the first positioning signal to provide an estimate of a clock signal acceleration; (c)...
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7091905 |
Culled satellite ephemeris information based on limiting a span of an inverted cone for locating satellite in-range determinations
Locating satellites (e.g., GPS) are culled into a sub-plurality based largely on dwell time within an inverted cone above a relevant site in communication with a wireless device. A first inverted...
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7079076 |
Method of determining the position of a radio-frequency signal receiver without knowledge of the initial approximate position, and receiver for implementing the same
The method of determining the position of a radio-frequency signal receiver consists first of all in dividing the Earth's surface into N geographical regions as a function of the N channels...
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7069019 |
System and method to estimate the location of a receiver
System and method to determine the location of a receiver are provided. The received signal is decomposed into signal chunks that are then correlated with the reference signals of the transmitting...
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7068217 |
Positioning device, mobile terminal, positioning method, and positioning program
A device and method are provided to reduce the time required for positioning by a GPS without allowing specific parties to occupy a communication channel. An initial location acquisition unit...
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7065629 |
Address translation logic for use in a GPS receiver
The address translation logic of the present invention is incorporated in a global positioning system (GPS) receiver and operates to group data in memory based on translating the address from a...
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7061425 |
Frequency error tracking in satellite positioning system receivers
A method in a satellite positioning system (SPS) receiver 100 including acquiring a plurality of at least two SPS signals, estimating frequency error for each of the plurality of SPS signals, and...
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7053824 |
Method and apparatus for receiving a global positioning system signal using a cellular acquisition signal
Method and apparatus for a GPS device that uses at least one cellular acquisition signal is described. More particularly, a GPS device is configured to receive at least one cellular acquisition...
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7053827 |
GPS reception method and GPS receiver
The present invention is intended to provide the synchronization acquisition of signals received from four GPS satellites in a short time and with stability by the time in which an intermediate...
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7042392 |
GPS access system and method
This invention describes a means for acquiring GPS P/Y code under jamming conditions. It improves jam resistance by augmenting a component of the GPS signal with one from a different satellite...
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7043363 |
Host based satellite positioning systems
Methods and systems consistent with the present invention provide a host based positioning system. The host based positioning system includes a tracker hardware interface that connects to a...
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7026987 |
Asynchronous assisted GPS position determination
A method of and computer system for assisting GPS position determination is described. Ephemeris and updated almanac information for a GPS satellite is received over a datalink. Based on the...
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7019690 |
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...
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7002515 |
GPS receiver using software correlation for acquisition and hardware correlation for tracking
A GPS receiver includes a CPU for synchronously acquiring the GPS satellites by using software correlating and a hardware section composed of multiple hardware correlating units that execute a...
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7002514 |
Using multiple detection algorithms in positioning signal processing
A systematic method for acquiring positioning signals, such as global positioning system (GPS) signals, uses different signal detection algorithms at different stages of signal detection. For...
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6992618 |
Method and apparatus for scheduling search for and acquisition of global positioning satellites
A wireless remote unit performs SPS acquisition interleaved with receiving paging information over a wireless slotted paging channel and receiving data packets over a wireless data communication...
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6993345 |
Positioning system of wireless terminal
A wireless terminal has the enhanced performance in the attainability of successful search of GPS satellites based on the operation of a position data server. The server sets a GPS satellite search...
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6985811 |
Method and apparatus for real time clock (RTC) brownout detection
A method and apparatus for real time clock brownout detection. A low power real time clock (RTC) operates continuously to keep time in a global positioning system (GPS) receiver while some receiver...
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RE38899 |
Method for providing location certificates
Methods and apparatus for providing location certificates to certify the position or location of an object are disclosed. The position of the object is computed using radio signals and the secure...
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6963749 |
Radio communication terminal unit and method of transmitting location information
A cellular phone unit receives GPS satellite information of GPS satellites and base station information of base stations. It extracts the GPS satellite information and the base station information...
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6958726 |
Method and apparatus for adjusting acquisition assistance data received by a mobile receiver from a server
Method and apparatus for adjusting acquisition assistance data received by a mobile receiver from a server is described. In one example, pseudoranges are measured from the mobile receiver to a set...
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6957143 |
Monitoring of substitution of high quality position measurements with upgraded low quality position measurements
A method for monitoring of the substitution at least one high quality position measurement with a set of upgraded low quality position measurements comprising the steps of: (A) selecting a high...
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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...
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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...
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6922168 |
Method for obtaining GPS signal for user terminal
Disclosed is a method for obtaining a GPS signal by a user terminal operating in a time division duplex method, the user terminal receiving the GPS signal and a base station signal, the method...
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6917330 |
Positioning system
In order to solve a conventional problem that precision deterioration that cannot be determined by only a DOP, a positioning system is provided which comprises: a receiver for receiving signals...
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6915210 |
Method of updating GPS almanac data for satellites not in view
A method of updating Global Positioning System almanac data includes steps for obtaining a current satellite almanac for a satellite constellation at a server in a communications infrastructure...
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6909896 |
Apparatus and method for two-way data communication via satellite
Two-way data communication via satellite, using data communication in a first direction via satellites in geostationary orbit, and a data communication in a second direction via satellites in a...
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6903684 |
Method and apparatus for optimizing GPS-based position location in presence of time varying frequency error
Position determination accuracy of a wireless communication device may be negatively affected by a large unaccounted GPS doppler bias, which in turn may affect GPS doppler estimations and GPS...
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6888498 |
Method and system for compensating satellite signals
A method and system pertaining to a dual antenna compensation algorithm is provided. A local area augmentation system may include a dual antenna system to receive signals from satellites. The...
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6882908 |
Method for calculating instantaneous characteristics of a satellite in orbit, equipped with a GNSS receiver
A method for calculating instantaneous characteristics of a satellite in orbit equipped with a GNSS receiver, capable of performing measurements of pseudo-distance, when fewer than four...
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6882936 |
Integrated GPS/interference location system with anti-jam processor
A user set determines a location of an interference signal by receiving a satellite signal and an interference signal and increasing the interference signal-to-noise ratio to produce a first output...
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6882306 |
Method for determining a position of an electronic device using a satellite positioning system
The present invention relates to a method for determining the position of an electronic device using satellites in a positioning system. In the method, satellite orbit data and a default position...
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6873288 |
Enhanced GNSS receiver
An improved GPS or GNSS receiver can operate at low signal levels and in the presence of RF interference including multipath. Three separate technologies known in the prior art are integrated: a)...
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6864836 |
Method for receiver autonomous integrity monitoring and fault detection and elimination
A method for detecting and identifying a faulty measurement among a plurality of GPS measurements, obtained by a GPS receiver with respect to a plurality of satellites in view of the GPS receiver,...
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6856282 |
Directly acquiring precision code GPS signals
In general, the invention is directed to techniques for directly acquiring P-codes without first acquiring C/A-codes. For example, in one embodiment, a system comprises an assist server to track a...
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