Patent application number | Description | Published |
20080200184 | METHOD FOR ANGLE OF ARRIVAL DETERMINATION ON FREQUENCY HOPPING AIR INTERFACES - A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in response to one or more calibration signals injected into the system at one or more of the frequencies in the hopping sequence and proximate in time to reception of the communication signal. The calibration coefficients are reflective of a frequency and time dependent parameter of a path between the antenna and wireless location sensor. The AOA is determined as a function of the calibration coefficient and the radio frequency energy of the received communication signal. Several embodiment of the method are illustrated. | 08-21-2008 |
20080238777 | SYSTEM AND METHOD FOR ENHANCIN THE ACCURACY OF A LOCATION ESTIMATE - A method for enabling a system to enhance the accuracy of a location estimate modifies weights in a weight matrix associated with receiver station measurements in parallel with successive refinements of the location estimate. In a typical location estimation scenario, several receiving stations simultaneously derive measurements of a signal from the emitter. Any one of these measurements is in general some function of the emitter location and the receiving station location. The aggregate of these measurements is often in excess of the minimum number of measurements required to provide an estimate of the emitter location. Where such an excess exists, the method proceeds by modifying the weights associated with the measurements in parallel with successive refinements of the location estimate. The method can be implemented over various cellular protocols with a consistent and significant enhancement in the accuracy of location estimates. | 10-02-2008 |
20080248744 | System and Method for Detection of Mobile Operating Through a Repeater - A system and method for a network analysis system operating in a wireless communication system with repeaters is disclosed. Embodiments of the system and method enable the network analysis system to determine if signals being received by the network receivers arrive directly from a target mobile appliance or if the signals are passing through a repeater. The repeaters through an augmentation measure attribute of a received signal to a network manager and based on these attributes it is determine whether the signal is served by a repeater or other network device. | 10-09-2008 |
20080248745 | System and Method for Identifying the Path or Devices on the Path of a Communication Signal Using (1+r(T)) Amplitude Modulation - A system and method of applying a known modification to a signal to enable a determination of a signal received by a first node is received directly from a second node or indirectly through a repeater. The repeater receives a primary signal and creates a secondary signal as a function of the primary signal and a known modification, wherein the known modification identifies the repeater. The primary signal is transmitted and injected with the secondary signal as the first signal to the primary receiver. | 10-09-2008 |
20090086693 | System and method for RF space protection and control - A system and method of controlling the operation of the wireless communications between a mobile device and access point by monitoring and modifying the communications. | 04-02-2009 |
20090286551 | E-OTD AUGMENTATION TO U-TDOA LOCATION SYSTEM - A method for use in a wireless communication system with a network overlay geolocation system having a sparse deployment network in which base stations of the wireless communication system may or may not have a co-located wireless location sensor (WLS). The method uses U-TDOA measurements on the uplink (reverse) signal and E-OTD measurements on the downlink (forward) signals to estimate a location for a mobile appliance. | 11-19-2009 |
20100304686 | WIRELESS TRANSCEIVER TEST BED SYSTEM AND METHOD - A system and method for testing wireless transceivers in a virtual wireless environment including emulating an RF environment, creating virtual spectrum users having selectable transmission parameters and physical characteristics and evaluating the operation of the wireless transceiver in the virtual wireless environment. | 12-02-2010 |
20120081248 | SYSTEM AND METHOD FOR ROBUST NAVIGATION AND GEOLOCATION USING MEASUREMENTS OF OPPORTUNITY - A system and method to opportunistically capture and use measurements on a priori unknown radio signals, not intended for radio navigation or geolocation, to improve navigation/geolocation position estimation yield and accuracy. | 04-05-2012 |
20130265193 | PERFORMANCE IMPROVEMENTS FOR MEASUREMENT OF OPPORTUNITY GEOLOCATION/NAVIGATION SYSTEMS - A system and method of determining the location of a mobile device using signals of opportunity, derived time stamps and sharing of signal information with other mobile devices. | 10-10-2013 |
20140051363 | WIRELESS TRANSCEIVER TEST BED SYSTEM AND METHOD - A system and method for testing wireless transceivers in a virtual wireless environment including emulating an RF environment, creating virtual spectrum users having selectable transmission parameters and physical characteristics and evaluating the operation of the wireless transceiver in the virtual wireless environment. | 02-20-2014 |
20140154995 | ADAPTIVE RF SYSTEM TESTING SYSTEM AND METHOD - A system and method for testing an adaptive RF system in an emulated RF environment using a feedback control module to efficiently and accurately evaluate the performance of the RF system under test in the search space. | 06-05-2014 |
20140273870 | INTERACTIVE RF SYSTEM TESTING SYSTEM AND METHOD - A system and method for evaluating the interactivity of RF devices in a virtual RF environment having selective virtual spectrum users remotely controlled by a web browser, where the virtual spectrum users have selectable interactivity parameters, and the virtual RF spectrum can be selectively changed, and the performance of the virtual spectrum users is evaluated and assigned scores as a function of the evaluation to determine which virtual spectrum user receives the highest amount of points. | 09-18-2014 |
20150048972 | SYSTEM AND METHOD OF USING MEASUREMENTS OF OPPORTUNITY WITH VECTOR TRACKING FILTERS FOR IMPROVED NAVIGATION - A system and method to opportunistically use measurements on a priori unknown radio signals, not intended for radio navigation or geolocation, to improve navigation/geolocation position estimation yield accuracy and efficiency. | 02-19-2015 |