Aerial vehicle detection system

1. A system for identifying an aerial vehicle, the system comprising:

a radar sub-system having a static location, the radar sub-system comprising at least one radar connectable to a static support member and a transceiver configured to transmit data indicative of one or more targets identified by the radar within an airspace, wherein the at least one radar is configured to receive, as a continuous input, data indicative of the static location, the static location being the location of the radar when connected to the static support member;

a receiver arranged to receive the data indicative of one or more targets identified by the at least one radar; and

a processing system comprising one or more processors configured to process said data, whereby to identify at least one aerial vehicle.

2. A system according to claim 1 , wherein the at least one radar comprises a marine radar.

3. A system according to claim 1 , wherein said data indicative of one or more targets identified by the at least one radar within an airspace comprises course, speed, closest point of approach and time of closest point of approach, for each target.

4. A system according to claim 1 , wherein the at least one radar has a usable swept volume and a vertical beam width, and is connectable to the static support member via an adjustable connector, the adjustable connector being arranged such that the vertical beam width is rotatable with respect to a centre of the adjustable connector and about an axis that is perpendicular to a longitudinal axis of the static support member and is aligned with the centre of the adjustable connector so as to control an overlap between the usable swept volume and the ground.

5. A system according to claim 1 , wherein the radar sub-system comprises a plurality of radars, each connectable to a respective static support member and positioned with respect to another of the radars such that the plurality of radars collectively provide contiguous coverage over a predetermined volume within the airspace.

6. A system according to claim 5 , wherein each radar has a usable swept volume, and is positioned with respect to another of the radars such that overlap between respective usable swept volumes excludes areas occupied by objects on the ground and/or at sea level.

7. A system according to claim 6 , wherein the processing system is configured to output a location associated with the identified at least one aerial vehicle to a graphical user interface, the graphical user interface being configured to display a map of a region including respective locations of at least the or each radar and its usable swept volume.

8. A system according to claim 7 , wherein the processing system comprises a correlator configured to correlate data indicative of one or more targets identified by a first radar with data indicative of one or more targets identified by a second radar, whereby to generate first correlated data associated with at least one aerial vehicle; and

wherein the correlator is configured to identify a first vehicle location associated with the first correlated data and to output the first vehicle location to the graphical user interface for display on the map.

9. A system according to claim 8 , further comprising an automatic dependent surveillance-broadcast (ADS-B) receiver arranged to receive tracking information from aerial vehicles equipped with an ADS-B transceiver, wherein the processing system is further configured to process said tracking information received from the ADS-B receiver, whereby to identify at least one aerial vehicle; and

wherein the correlator is configured to correlate data indicative of one or more targets identified by a first radar and/or data indicative of one or more targets identified by a second radar with the tracking information received from the ADS-B receiver, whereby to generate second correlated data associated with at least one aerial vehicle and to identify at least a second vehicle location for display on the map.

10. A system according to claim 9 , further comprising a telemetry receiver arranged to receive telemetry data from aerial vehicles equipped with a radio modem, wherein the processing system is further configured to process said telemetry data received from the telemetry receiver, whereby to identify at least one aerial vehicle;

wherein the correlator is configured to correlate the telemetry data received from the telemetry receiver with second correlated data associated with at least one aerial vehicle whereby to generate fourth correlated data associated with at least one aerial vehicle and to identify at least a fourth vehicle location for display on the map.

11. A system according to claim 8 , wherein the graphical user interface is responsive to input received from an input device to display the first vehicle location.

12. A system according to claim 8 , wherein the first correlated data comprises vector data indicative of direction and speed, and the correlator is configured to identify the first vehicle location in the event that the vector data are within predetermined ranges.

13. A system according to claim 12 , further comprising a telemetry receiver arranged to receive telemetry data from aerial vehicles equipped with a radio modem, wherein the processing system is further configured to process said telemetry data received from the telemetry receiver, whereby to identify at least one aerial vehicle, and wherein the processing system is configured to determine a potential collision between two aerial vehicles based on the vector data, and to generate instructions for transmission via the telemetry receiver to change a flight path of one of the aerial vehicles.

14. A system according to claim 5 , wherein the processing system comprises a correlator configured to correlate data indicative of one or more targets identified by a first radar with data indicative of one or more targets identified by a second radar, whereby to generate first correlated data associated with at least one aerial vehicle.

15. A system according to claim 14 , further comprising a telemetry receiver arranged to receive telemetry data from aerial vehicles equipped with a radio modem, wherein the processing system is further configured to process said telemetry data received from the telemetry receiver, whereby to identify at least one aerial vehicle; and

wherein the correlator is configured to correlate data indicative of one or more targets identified by the first radar and/or data indicative of one or more targets identified by the second radar with the telemetry data received from the telemetry receiver, whereby to generate third correlated data associated with at least one aerial vehicle and to identify at least a third vehicle location for display on the map.

16. A system according to claim 1 , further comprising an automatic dependent surveillance-broadcast (ADS-B) receiver arranged to receive tracking information from aerial vehicles equipped with an ADS-B transceiver, wherein the processing system is further configured to process said tracking information received from the ADS-B receiver, whereby to identify at least one aerial vehicle.

17. A system according to claim 1 , further comprising a telemetry receiver arranged to receive telemetry data from aerial vehicles equipped with a radio modem, wherein the processing system is further configured to process said telemetry data received from the telemetry receiver, whereby to identify at least one aerial vehicle.

18. A system according to claim 1 , wherein the at least one radar comprises processing circuitry configured to perform Doppler processing using the static location.