Designer Alexander Gorshkov has developed a radar system for drones that can detect objects even with active radio interference. The development also allows navigation without GPS and does not require bulky antennas.
Gorshkov proposed abandoning narrow-beam antennas in favor of signal processing. The system then uses noise-like radio pulses and compares the reflected signal with a reference.
In fact, the radar "breaks through" radio noise and separates the useful signal from interference, including intentional ones.
Additionally, the system reduces the impact of natural interference. Grass, foliage, and uneven surfaces lose signal coherence and disappear from the radar picture, while equipment and infrastructure remain clearly visible.
Two antennas are used to determine direction. One records the electrical component of the wave, the other — the magnetic. This allows for precise calculation of the object's position.