Determining a position and an integrity of the position of a vehicle and an integrity of the position of neighboring vehicles using radar and ads-b data

A system for determining a position of a vehicle-of-interest, the system comprising:

• an ADS-B receiver configured to receive data including position, velocity, heading and integrity that is broadcast from an ADS-B system from at least two neighboring vehicles in the vicinity of the vehicle-of-interest;
• a radar configured to determine a distance to, and a direction of travel of, each of the at least two neighboring vehicles;
• a storage medium configured to store a position derivation application;
• and
• a processor, in communication with the ADS-B receiver, the radar, and the storage medium, the processor configured to run the position derivation application, which, when executed by the processor causes the processor to execute the method including:
• receiving a current path of the vehicle-of-interest;
• calculating a current position and integrity of the vehicle-of-interest based on (1) the data from the at least two neighboring vehicles, (2) the distance to, and direction of travel of, the at least two neighboring vehicles, and (3) the current path of the vehicle-of-interest;
• checking the integrity of the position received in the data from the at least two neighboring vehicles;
• and
• broadcasting a message about the integrity of the position received in the data from the at least two neighboring vehicles.

A method for determining a position of a vehicle-of-interest, the method comprising:

• receiving broadcast data from an ADS-B system from at least two neighboring vehicles in the vicinity of the vehicle-of-interest;
• receiving radar reflections from the at least two neighboring vehicles using radar on the vehicle-of-interest;
• receiving a current path of the vehicle-of-interest;
• calculating a current position and integrity of the vehicle-of-interest based on the broadcast data from the at least two neighboring vehicles, the radar reflections from the at least two neighboring vehicles, and the current path of the vehicle-of-interest;
• checking the integrity of a position received in the broadcast data from the at least two neighboring vehicles;
• and
• broadcasting a message about the integrity of the position received in the broadcast data from the at least two neighboring vehicles.