摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A device, method, and computer program product for monitoring and transmitting a location and a local status of a remote device using a satellite transmitter is provided. The monitoring device includes a position location unit, a satellite transmitter, a power source, a controller, and a short-range radio transceiver. The position location unit is configured to determine a location of the remote device. The 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 satellite transmitter, and to periodically enable and disable power from the power source to the position location unit and the satellite transmitter. The short-range radio transceiver is used to configure and remotely manage the monitoring device and is used by the monitoring device to monitor local sensors wirelessly.
摘要:
A device, method, and computer program product for monitoring and transmitting a location and a local status of a remote device using a satellite transmitter is provided. The monitoring device includes a position location unit, a satellite transmitter, a power source, a controller, and a short-range radio transceiver. The position location unit is configured to determine a location of the remote device. The 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 satellite transmitter, and to periodically enable and disable power from the power source to the position location unit and the satellite transmitter. The short-range radio transceiver is used to configure and remotely manage the monitoring device and is used by the monitoring device to monitor local sensors wirelessly.
摘要:
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.
摘要:
A direct sequence spread spectrum data transmitter for creating a modulated data signal comprising: a programmable-system-on-a-chip baseband modulator having only four blocks of programming logic, the four blocks of programming logic consisting of a DigBuf clock buffer block, a pseudo-random-sequence 8-bit block, an 8-bit timer block, and a serial peripheral interface slave block. A remote telemetry unit comprising the foregoing transmitter. A method for manufacturing the foregoing transmitter. A method for controlling the foregoing transmitter.
摘要:
A direct sequence spread spectrum data transmitter for creating a modulated data signal comprising: a programmable-system-on-a-chip baseband modulator having only four blocks of programming logic, the four blocks of programming logic consisting of a DigBuf clock buffer block, a pseudo-random-sequence 8-bit block, an 8-bit timer block, and a serial peripheral interface slave block. A remote telemetry unit comprising the foregoing transmitter. A method for manufacturing the foregoing transmitter. A method for controlling the foregoing transmitter.
摘要:
A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life. The system is used in a variety of applications including remote monitoring and mobile communications.