172764 ⎘
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified; Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe Secondary Surveillance Radar [SSR] in general
Sub-classes:Method and apparatus for determining a position of an airborne vehicle using secondary surveillance radars as beacons
#2AERIAL VEHICLE DETECTION SYSTEM
#3Aviation detect and avoid method and system
#4SYSTEMS AND METHODS FOR ADAPTIVE WHISPER-SHOUT FOR ENHANCED DEGARBLE CAPABILITY
#5Air traffic control antenna and system
#6Method for characterizing the density of mode S interrogations and responses and secondary radar implementing such a method
#7AERIAL VEHICLE DETECTION SYSTEM
#8Systems and methods for conflict detection using position uncertainty
#9Method and system for tracking non-cooperative objects using secondary surveillance radar
#10Method and system to identify and display suspicious aircraft
#11Avian detection system
#12Radar saturating clutter mitigation by waveform selection
#13Method and system for tracking objects using passive secondary surveillance radar
#14Method for measuring antenna patterns of a secondary radar and secondary radar implementing such a method
#15Method for controlling transmission of an electronically steerable antenna system and such electronically steerable antenna system
#16Secondary radar with optimized spatio-temporal management
#17Surveillance systems providing integrated functional redundancy
#18Systems and methods for providing L-band RF architectures
#19Apparatus and method for detecting a traffic participant
#20Method for controlling message transmission power implemented by a system for preventing collisions of aircraft during flight
#21Integrated radar and ADS-B
#22Systems and methods to detect GPS spoofing
#23Integrated, externally-mounted ADS-B device
#24Method and ADS-B base station for validating position information contained in a mode S extended squitter message (ADS-B) from an aircraft
#25Determination of a change in atmospheric pressure based on radio frequency return signal
#26Secondary radar able to detect targets at high elevation
#27Systems and methods for providing a DME L-band shared antenna
#28Avian detection system using transponder data
#29Two-element traffic collision avoidance system (TCAS) antenna
#30Autonomous anonymity
#31Integrated, externally-mounted ADS-B device
#32Secondary surveillance radar signals as primary surveillance radar
#33System and method for aircraft navigation based on diverse ranging algorithm using ADS-B messages and ground transceiver responses
#34System and method of monitoring transponder transmissions
#35Determination of state vector, timing, and navigation quality metrics from reception of ADS-B transmissions
#36Traffic information services-broadcast (TIS-B) automatic address detection and coverage indication
#37Satellite having a plurality of directional antennas for transmitting and/or receiving air-traffic control radio signals
#38Method and system for the estimation and cancellation of multipath delay of electromagnetic signals, in particular SSR replies
#39Mode S anti-reflection algorithm for eliminating false tracks due to reflected replies in ground radar systems
#40Method for locating aircraft which is independent of any satellite navigation system
#41METHOD AND APPARATUS FOR PROVIDING MOTION CUES IN COMPRESSED DISPLAYS
#42POSITION DETERMINING METHOD AND SYSTEM USING SURVEILLANCE GROUND STATIONS
#43Determination of state vector, timing, and navigation quality metrics from reception of ADS-B transmissions
#44OMNI-DIRECTIONAL ANTENNA AT A SECONDARY SURVEILLANCE RADAR
#45Secondary surveillance radar system for air traffic control
#46Method for positioning and vehicle communication unit
#47Multilateration system and method
#48Device for receiving secondary radio signals with quasi-dynamic or dynamic sectoring of the space to be monitored and corresponding method
#49Method for identifying a facility on the ground or at sea
#50Radar registration using targets of opportunity
#51Systems and methods for providing antenna calibration
#52SECONDARY RADAR SYSTEM WITH SIGHTING FUNCTIONALITIES TYPICAL OF PRIMARY RADAR SYSTEMS
#53Systems and methods for conflict detection using dynamic thresholds
#54Compact beacon radar and full ATC services system
#55Apparatus and method to generate and detect virtual targets
#56SYSTEM AND METHOD FOR INTERROGATING A TARGET USING POLARIZED WAVES
#57Device and method for the improved directional estimation and decoding by means of secondary radar signals
#58Identification friend or foe (IFF) system
#59System and method for tracking and identifying aircraft and ground equipment
#60Bi-static radar processing for ADS-B sensors
#61Systems and methods for conflict detection using position uncertainty
#62Systems and methods for air traffic surveillance
#63Methods and apparatus for using interferometry to prevent spoofing of ADS-B targets
#64Multilateration system and method
#65Multilateration apparatus
#66Mode S radar
#67Technique for mitigating multipath impacts on azimuth accuracy in a monopulse interrogator
#68Systems and methods for antenna calibration
#69Method and apparatus to improve ADS-B security
#70Method for pre-detecting responses in a secondary radar or application to the detection of mode S responses
#71High precision surveillance system by means of multilateration of secondary surveillance radar (SSR) signals
#72Systems and methods for monitoring transponder performance
#73ADS-B radar system
#74High-capacity location and identification system for cooperating mobiles with frequency agile and time division transponder device on board
#75Mode S radar
#76Apparatus for multilateration and method
#77System and method for providing airport financial reports
#78Object locating arrangements, and in particular, aircraft geometric height measurement arrangements
#79Correlation of flight track data with other data sources
#80Traffic alert collision avoidance system (TCAS) devices and methods
#81Method and system for determining the position of an object
#82Method and apparatus to improve ADS-B security
#83Secondary surveillance radar and its interrogation transmission method
#84Flight identification system and method of determining flight identification using mode-S address
#85Identification and location system for personnel and vehicles
#86Aircraft boundary transition warnings and auto alerting
#87Secondary surveillance radar system, ground equipment for use therein, and response signal checking method applied thereto
#88Correlation of flight track data with other data sources
#89Passive airborne collision warning device and method
#90Correlation of flight track data with other data sources