US 12,405,371 B1
Multisite radar system for airborne traffic detection
Grigory Yakushev, Wettswil am Albis (CH); and Luuk Adriaan Cornelis van Dijk, Bellinzona (CH)
Assigned to Daedalean AG, Zurich (CH)
Filed by Daedalean AG, Zurich (CH)
Filed on Jul. 15, 2022, as Appl. No. 17/866,041.
Int. Cl. G01S 13/933 (2020.01); G01S 7/40 (2006.01); G08G 5/26 (2025.01); G08G 5/56 (2025.01)
CPC G01S 13/933 (2020.01) [G01S 7/4056 (2013.01); G08G 5/26 (2025.01); G08G 5/56 (2025.01)] 20 Claims
OG exemplary drawing
 
1. A multisite radar system configured for airborne traffic detection between multiple airborne aircraft including a first aircraft, wherein the first aircraft includes a first receiver, the system comprising:
a set of multiple stationary transmitters that are stationary with respect to their geographical location on Earth, wherein the set of multiple stationary transmitters includes a first transmitter, a second transmitter, and a third transmitter, wherein individual ones of the set of multiple stationary transmitters include one or more hardware processors configured by machine-readable instructions to:
per individual stationary transmitter, (i) generate an information packet, the information packet including a current timestamp and location information of an individual transmitter antenna included in the individual stationary transmitter, and (ii) transmit the information packet using a particular modulation scheme; and
the first receiver included in the first aircraft, wherein the first receiver is configured to receive radar signals from the set of multiple stationary transmitters, the first receiver including:
an antenna array configured to receive the radar signals, wherein the received radar signals convey information, wherein the conveyed information includes:
(a) a first information packet from the first transmitter, a second information packet from the second transmitter, and a third information packet from the third transmitter, and
(b) one or more reflections of the first, second, and third information packets from one or more targets; and
one or more physical processors configured by machine-readable instructions to:
demodulate the received radar signals to obtain the conveyed information;
determine a current geographical location of the first receiver included in the first aircraft, wherein determination is based on the conveyed information from the first, second, and third transmitters; and
determine one or more current geographical locations of the one or more targets, based on the current geographical location of the first receiver and further based on the reflections included in the conveyed information.