| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342457000 | Land vehicle location (e.g., bus, police car | 8 |
| 20090315777 | TRACKING OF AUTONOMOUS SYSTEMS - A system includes first and second transmitters attachable to first and second vehicles. The transmitters can each transmit successive signals at predetermined time intervals. Tracking stations at different locations are configured to receive the signals transmitted by at least one of the first and second transmitters, distinguish signals transmitted by the first transmitter from signals transmitted by the second transmitter, and determine from the transmitted signals respective position information for at least one of the first and second transmitters. Each of the tracking stations is further configured to be in signal communication with at least one other of the tracking stations. The system further includes at least one processing device in signal communication with at least one of the tracking stations. The processing device is configured to determine from the position information a location of the first vehicle relative to a location of the second vehicle. | 12-24-2009 |
| 20110148712 | Apparatus And Method For Determining Vehicle Location - Communications are established and conducted between a communication and jamming detection at a vehicle and a base station. At the communication and jamming detection device, a determination is made as to when jamming of the communications between the communication and jamming detection device and the base station is occurring. When jamming is determined to be occurring, at least one location determination signal is transmitted from the communication and jamming detection device to at least one external tracking device. At the at least one external location determination device, the at least one location determination signal is received from the communication and jamming detection device. The location of the communication and jamming detection device at the vehicle is determined from the at least one location determination signal. | 06-23-2011 |
| 20110148713 | Apparatus And Method For Tracking Stolen Vehicles - An indication that jamming is occurring with vehicular communications is received. When activated by a control signal from a vehicle recovery service, a vehicle location signal is transmitted over a channel in the communication network that enables the vehicle recovery service to track a location of the vehicle. When the indication of jamming is received and before the control signal is received, the vehicle location signal is also transmitted to the vehicle recovery service. | 06-23-2011 |
| 20110267235 | METHOD OF TRACKING A VEHICLE USING MICRORADIOS - A microradio is provided with a hysteretic switch to permit an optimum range increasing charging cycle, with the charging cycle being long relative to the transmit cycle. Secondly, an ensemble of microradios permits an n | 11-03-2011 |
| 20110279325 | LOCALIZATION SYSTEM FOR DETERMINING A POSITION OF A DEVICE THAT CAN BE MOVED ON THE FLOOR - The invention relates to a localization system for determining a state of a device that can move on a floor, comprising a floor transceiver system having a plurality of floor transceivers which each have floor antennas for marking position points within the plane of the floor, and a transceiver tablet which is connected to the movable device and has a transmitting/receiving surface which is located opposite the floor and is suitable for continuously determining the position of at least two floor antennas within the transmitting/receiving surface simultaneously. | 11-17-2011 |
| 20110285593 | RADIO FREQUENCY POSITIONING SYSTEM FOR VEHICLES - A positioning system for radio frequency devices includes a two-way radio antenna, for vehicles, having a transmitting and a receiving element. Reference antennas have retro-directive arrays which can shape the signal beams in elevation; polarize transmission and reception signals according to a circular or a linear polarization, the polarized transmission retro-directively reflecting signals having the same polarization as the incident ones in the case of circular polarisation, or retro-directively reflecting signals having orthogonal polarisation in the case of linear polarisation. An encoder is included for transmitting an identification code of the reference antenna. A controller processes the spatial and temporal data resulting from communication through the radio waves transmitted and received by the vehicle antennas and reflected by the reference antennas. The controller calculates the distance of the vehicle from the reference antennas that have reflected the signal transmitted by the antennas. | 11-24-2011 |
| 20120299777 | Method of Determining the Position of a Vehicle Moving along a Guideway - A method of determining the position of a vehicle moving along a guideway is disclosed wherein signals from groups of transponders located beside the guideway are detected as the vehicle moves along the guideway to create a footprint in the time domain corresponding to the time the vehicle is in communication with that transponder. The transponders of each group are spaced a known distance apart from each other. An estimate of the position of the moving vehicle is computed by matching the point in the time domain that bears the same geometric relationship to the footprints corresponding to the transponders of the group to a point in the spatial domain spatial domain the bears a known geometric relationship with the transponders of each group. | 11-29-2012 |
| 20170234961 | RANGING AND ANGLE OF ARRIVAL ANTENNA SYSTEM FOR A MOBILE ROBOT | 08-17-2017 |
