172203 ⎘
Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves Means for monitoring or calibrating
Sub-classes:ANTENNA ORIENTATION DETECTION FOR INTERFERENCE DETECTION AND MITIGATION
#2Radio wave device testing system having improved signal transmission path
#3System and method for ultra-high-resolution ranging using RFID
#4Systems and methods for textural zone monitoring
#5False positive immunity in beacon systems, and related systems, methods, and devices
#6System and method for ultra-high-resolution ranging using RFID
#7Object monitoring system
#8Enhanced LORAN system generating correction factors based upon satellite-derived data and related methods
#9Method and system for transceiver calibration
#10Enhanced LORAN (eLORAN) system having corrected additional secondary factor (ASF) data
#11Object monitoring system
#12Metadata-based emitter localization
#13Systems and methods for measuring performance of site maintenance
#14System and method for aligning a sensor assembly
#15Metadata-based emitter localization
#16System and method for aiding the landing of an aircraft
#17System and method for calibrating a transmitting unit, and watercraft comprising a system for calibrating a transmitting unit
#18Terrestrial based positioning systems and methods
#19Balloon-based positioning system and method
#20POSITION CALCULATION USING BLUETOOTH LOW ENERGY
#21Management of synchronisation with a beacon
#22Aircraft systems and methods for providing landing approach alerts
#23Method and apparatus for detecting that a device is immersed in a liquid
#24Infrastructure for location discovery
#25Navigation system and method
#26Balloon-based positioning system and method
#27Autonomous, plug-in wear or abrasion sensing system
#28LOCATOR BEACON AND RADAR APPLICATION FOR MOBILE DEVICE
#29Navigation system and method
#30System and method for mobile location using ranked parameter labels
#31Electromagnetic emitter emitting simultaneously along three orthogonal axes to detect object position and orientation
#32System and methods for wireless health monitoring of a locator beacon which aids the detection and location of a vehicle and/or people
#33Infrastructure for location discovery
#34Position determination system and position determination method
#35Automatic generation of signal strength map for location determination of mobile devices
#36Location system with calibration monitoring