Abstract: A device, method, and computer program product for monitoring and transmitting a location and a local status of a remote device using a simplex satellite transmitter. The monitoring device includes a position location unit, a simplex satellite transmitter, a power source, and a controller. The position location unit is configured to determine a location of the remote device. The simplex satellite transmitter is configured to transmit the location to one or more satellites in low earth orbit. The controller includes a power management unit configured to control a power state of the position location unit and the simplex satellite transmitter, and to periodically enable and disable power from the power source to the position location unit and the simplex satellite transmitter.
Type:
Grant
Filed:
February 24, 2005
Date of Patent:
February 26, 2008
Assignee:
Axonn, L.L.C.
Inventors:
Gary Naden, Stephen Schamber, Ronnie Tanner, Scott Quillin
Abstract: A device, method, and computer program product for monitoring and transmitting a location and a local status of a remote device using a simplex satellite transmitter. The monitoring device includes a position location unit, a simplex satellite transmitter, a power source, and a controller. The position location unit is configured to determine a location of the remote device. The simplex satellite transmitter is configured to transmit the location to one or more satellites in low earth orbit. The controller includes a power management unit configured to control a power state of the position location unit and the simplex satellite transmitter, and to periodically enable and disable power from the power source to the position location unit and the simplex satellite transmitter.
Type:
Grant
Filed:
September 8, 2003
Date of Patent:
August 29, 2006
Assignee:
Axonn L.L.C.
Inventors:
Gary Naden, Stephen Schamber, Ronnie Tanner, Scott Quillin
Abstract: A spread spectrum receiver and method having narrow-band interference rejection of narrow-band jamming signals using digital signal processing frequency domain techniques.
Abstract: A device, method, and computer program product for monitoring and transmitting a location and a local status of a remote device using a simplex satellite transmitter. The monitoring device includes a position location unit, a simplex satellite transmitter, a power source, and a controller. The position location unit is configured to determine a location of the remote device. The simplex satellite transmitter is configured to transmit the location to one or more satellites in low earth orbit. The controller includes a power management unit configured to control a power state of the position location unit and the simplex satellite transmitter, and to periodically enable and disable power from the power source to the position location unit and the simplex satellite transmitter.
Type:
Application
Filed:
February 24, 2005
Publication date:
August 4, 2005
Applicant:
AXONN L.L.C.
Inventors:
Gary Naden, Stephen Schamber, Ronnie Tanner, Scott Quillin
Abstract: A device, method, and computer program product for monitoring and transmitting a location and a local status of a remote device using a simplex satellite transmitter. The monitoring device includes a position location unit, a simplex satellite transmitter, a power source, and a controller. The position location unit is configured to determine a location of the remote device. The simplex satellite transmitter is configured to transmit the location to one or more satellites in low earth orbit. The controller includes a power management unit configured to control a power state of the position location unit and the simplex satellite transmitter, and to periodically enable and disable power from the power source to the position location unit and the simplex satellite transmitter.
Type:
Application
Filed:
September 8, 2003
Publication date:
March 10, 2005
Applicant:
AXONN L.L.C.
Inventors:
Gary Naden, Stephen Schamber, Ronnie Tanner, Scott Quillin
Abstract: A method, apparatus, computer-based product and system employs a digital receiver (or transceiver) to receive, digitize and process a direct sequence spread spectrum signal using efficient, low-cost digital signal processing components. A radio front end portion of the receiver receives and digitizes the signal, and a digital signal processing portion downconverts and despreads the signal by applying a pseudorandom noise (PN) code, used at a transmitter to spread a data signal contained in the direct sequence spread spectrum signal, to the received signal. In order to initially align, and maintain alignment of, the PN code with the direct sequence spread spectrum signal, a timing and state control mechanism is included that provides time reference correction information to the signal processing components of the receiver.
Type:
Grant
Filed:
July 22, 1999
Date of Patent:
October 28, 2003
Assignee:
Axonn L.L.C.
Inventors:
Gary A. Naden, Robert E. Rouquette, Dale E. Reiser
Abstract: A method utilizing intentionally generated in-band frequency harmonics to compensate for frequency error and frequency drift in a voltage controlled oscillator of a receiver, thereby eliminating the frequency synthesizer and RF divider required in conventional designs. The method includes modulating the intentionally generated frequency in a predetermined manner so that a receiver can identify the intentionally generated frequency and includes the use of plural frequency harmonics for use in a curve fitting technique to correct frequency error in the voltage controlled oscillator.
Type:
Grant
Filed:
November 2, 1999
Date of Patent:
January 1, 2002
Assignee:
Axonn, L.L.C.
Inventors:
H. Britton Sanderford, Jr., Robert J. Davis, Robert E. Rouquette