SYSTEM AND METHOD FOR AIRCRAFT NAVIGATION BASED ON DIVERSE RANGING ALGORITHM USING ADS-B MESSAGES AND GROUND TRANSCEIVER RESPONSES

摘要

A method of aircraft navigation via receiving signals emitted by other aircraft and corresponding reply message transmitted by ground transceivers and the using a new diverse-ranging algorithm that solves for the positions of a eavesdropping aircraft and the positions of direct-reply aircraft emitting the signals received by the eavesdropping aircraft.

主权项

1. A method of aircraft navigation and dependent surveillance using at least one broadcast message, the method comprising the steps of:
transmitting and recording the transmission time of a first broadcast message at a first aircraft of a plurality of aircraft, the first broadcast message comprising at least identity information of the first aircraft; receiving and recording the receiving time of the first broadcast message from the first aircraft at a plurality of ground transceivers and at a second aircraft; transmitting a reply message to the first broadcast message from each of the plurality of ground transceivers, wherein each reply message comprises at least the ground transceiver's identity and a delay time from receiving the first broadcast message to transmitting the reply message for that ground transceiver; receiving and recording the receiving time of the reply messages transmitted by each of the plurality of ground transceivers at the first aircraft and the second aircraft; determining a first position of the first aircraft on the first aircraft from at least the transmission time data for the first broadcast message, the receiving time data and the delay time for each of the received reply messages and the positions of each of the plurality of ground transceivers; determining a second position of the first aircraft and a first position of the second aircraft on the second aircraft from at least the receiving time data for the first broadcast message, the receiving time data and the delay time for each of the received reply messages, and the positions of each of the plurality of ground transceivers; transmitting a second broadcast message from the first aircraft comprising at least the identity information and the first position of the first aircraft; receiving the second broadcast message at the second aircraft; determining a second position of the second aircraft on the second aircraft from at least the receiving time data for the first broadcast message, the receiving time data and the delay time for each of the received reply messages, the positions of each of the plurality of ground transceivers, and the first position of the first aircraft contained in the second broadcast message; and transmitting a third broadcast message from the second aircraft comprising at least identity information and at least one of the first position and the second position of the second aircraft.