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Magellan Corporation Patents
Assignee:
Magellan Corporation
Address:
Santa Clara, CA
No. of patents:
18
Patents:












Patent Number Title Of Patent Date Issued
6691031 Method and apparatus for substituting sensor data for satellite signal in GPS receiver February 10, 2004
Embodiments of the present invention are directed to a method and apparatus for substituting temperature sensor data for a satellite signal in a GPS receiver. In one embodiment of the present invention, a mathematical model of a GPS receiver's clock's response to temperature change is ma
6674402 Global positioning system and global positioning apparatus January 6, 2004
A Global Positioning System carries out Doppler correction of a C/A code sequence after a frequency conversion, and calculates a pseudo range by performing correlation calculation between the C/A code, which is obtained by summing up the C/A code sequence beginning from a polarity invers
6483457 Global positioning system and global positioning apparatus November 19, 2002
A Global Positioning System carries out Doppler correction of a C/A code sequence after a frequency conversion, and calculates a pseudo range by performing correlation calculation between the C/A code, which is obtained by summing up the C/A code sequence beginning from a polarity invers
6463091 Spread spectrum receiver using a pseudo-random noise code for ranging applications in a way that October 8, 2002
A receiver of a radio frequency signal having a pseudo-random noise (PRN) code, and techniques of processing such a signal that are especially adapted for ranging applications. A signal corresponding to the PRN code is locally generated and used for decoding the received signal in a mann
6384798 Quadrifilar antenna May 7, 2002
A quadrifilar antenna for use in satellite communications comprises four conductive elements arranged to define two separate helical pairs, one slightly differing in electrical length than the other, defined by a cylinder of constant radius supported by itself or by a cylindrical non
6329946 GPS position measuring system and GPS position measuring apparatus December 11, 2001
A Global Positioning System carries out Doppler correction of a C/A code sequence after a frequency conversion, and calculates a pseudo range by performing correlation calculation between the C/A code, which is obtained by summing up the C/A code sequence beginning from a polarity invers
6272189 Signal correlation technique for a receiver of a spread spectrum signal including a pseudo-rando August 7, 2001
A receiver of a radio frequency signal having a pseudo-random noise (PRN) code modulated on a carrier, and techniques of processing such a signal that are especially adapted for ranging applications. Such an application is in a global positioning system (GPS or GLONASS) receiver. Both of
6229479 Relative position measuring techniques using both GPS and GLONASS carrier phase measurements May 8, 2001
A technique of accurately determining the relative position of two points using carrier phase information from receivers capable of making code and carrier phase measurements on the L1 and L2 frequencies of signals from either or both GPS and GLONASS satellites. These signals are process
6049309 Microstrip antenna with an edge ground structure April 11, 2000
In a microstrip patch antenna, multipath signals from below the horizon can be reduced by forming ground elements along the edge of the dielectric substrate. Additionally, by using lugs and capacitive elements in the patch antenna, the bandwidth of the antenna can be expanded while m
5970400 Adjusting the timing and synchronization of a radio's oscillator with a signal from an SATPS sat October 19, 1999
A communication system is provided for increasing communication range between at least two radio communication devices without increasing the output power of transmitted radio signals from the devices, and without increasing the antenna gain of the received signals. Each radio device
5953367 Spread spectrum receiver using a pseudo-random noise code for ranging applications in a way that September 14, 1999
A receiver of a radio frequency signal having a pseudo-random noise (PRN) code, and techniques of processing such a signal that are especially adapted for ranging applications. A signal corresponding to the PRN code is locally generated and used for decoding the received signal in a mann
5914685 Relative position measuring techniques using both GPS and GLONASS carrier phase measurements June 22, 1999
A technique of accurately determining the relative position of two points using carrier phase information from receivers capable of making code and carrier phase measurements on the L1 and L2 frequencies of signals from either or both GPS and GLONASS satellites. These signals are process
5901183 Signal correlation technique for a receiver of a spread spectrum signal including a pseudo-rando May 4, 1999
A receiver of a radio frequency signal having a pseudo-random noise (PRN) code modulated on a carrier, and techniques of processing such a signal that are especially adapted for ranging applications. Such an application is in a global positioning system (GPS or GLONASS) receiver. Both of
5635945 Quadrifilar helix antenna June 3, 1997
A quadrifilar helix antenna for use in satellite communications comprises four conductive elements arranged to define two separate helically twisted loops, one slightly differing in electrical length than the other, to define a cylinder of constant radius supported by itself or by a
5485154 Communication device and method(s) January 16, 1996
The present invention relates to the areas of communication and/or identification of remote devices (active or passive). The invention has application where there is a need to identify or communicate with more than one remote device. The remote device may be embodied as a transmitter
5302954 Identification apparatus and methods April 12, 1994
An identification system comprising a transponder having receiver means adapted to extract powering energy from a surrounding electromagnet field, transponder transmitter means adapted to transmit at least one unique signal from the transponder, frequency generating means for generating
5173849 Integratable synchronous rectifier December 22, 1992
A synchronous rectifier comprising: switch means responsive to a control signal for selectively providing conduction of an applied AC signal, and driver means responsive to the applied AC signal and adapted to provide said control signal in synchronism with the applied AC signal, wherein
5107227 Integratable phase-locked loop April 21, 1992
An integratable phase locked loop (IPLL) comprising sampled data filter means adapted to receive a first reference signal, the filter means sampling the first reference signal (Ref In) to provide a second reference signal (Control Volts Out), and voltage or current controlled oscillator

 
 
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