OneRadio’s unique approach to detecting moving objects such as drones, birds, ships etc. uses a real-time Passive Radar application. Its robustness and accuracy is only possible because of the extreme bandwidth and the high dynamic range of the OneRadio 1.0. Aside from being ideal for covert operations, the application has several benefits over traditional approaches.
A Single Antenna Solution:
A single OneRadio 1.0 connected to a single antenna can exploit multiple emitters to locate and track moving objects (both ground and aerial targets) with the processing done in real-time on a GPU within the system. A simple omni-directional antenna (e.g. a disc cone) is sufficient for normal operations, significantly reducing the overall footprint and complexity of the system installation, while enabling covert operations. The angular coverage is dependent on the diversity of exploited emitter locations and with favorable spread, 360 degree coverage is possible with just one system.
Accuracy and Robustness:
The coupling of the very linear OneRadio data with the proprietary algorithms enables a correlation noise floor that is 110 to 120 dB below the direct path signal strength of the exploited emitter (signal bandwidth of 6 MHz), with single antenna operations against digitally modulated signals. This results in significantly improved accuracy of the detection and tracking.
The algorithms that achieve the above capability employ a 1 second integration time/update rate, which is optimal for drone-like target speeds of ~30-45 mph.
Characteristics:
OneRadio’s extreme bandwidth when coupled with suitable processing capability allows for all available emitters to be exploited simultaneously, regardless of their spread across 0 – 2.5 GHz. This significantly increases the robustness of the system.
OneRadio’s high dynamic range (or linearity), when exploiting signals that are digitally modulated, substantially increases sensitivity and detection range (e.g. it enables a very low detection floor relative to the direct path). This capability also enables the exploitation of medium-to-weak signals in the presence of strong signals.
DEMO:
The image & video shown below contains data in Bistatic Range / Bistatic Doppler Space (raw footage).
DOAM demo video shows the detection of a DJI Inspire 2 drone (red dot) in real-time. The location is near the OneRadio offices in Seattle, WA.