Multi-Channel Direction-Finding Systems Using Radio Waves TRIZ Cases
- Reflecting Plate Direction Sensing for Fixed Radio Wave Antennas
A movable reflecting plate lets a fixed directional antenna estimate radio wave arrival direction from measured angle and received power or C/N.
- Multi-Beam VSAT Positioning Antenna for GNSS-Denied Timing
When GNSS is jammed or unavailable, a multi-beam phased array extracts time and position from VSAT satellite signals.
- Adaptive Radar Beamforming for Ionospheric Clutter Separation
By removing target-signal bins from the correlation matrix, adaptive radar beamforming suppresses ionospheric clutter without burying weak targets.
- Multiport Antenna Manifold for Wideband RF Direction Finding
A multiport antenna manifold speeds AoA and polarization estimation across wide frequency ranges while reducing DF size, weight, and processing load.
- Circular Antenna Array AOA Estimation for Multipath Indoor Localization
Weighted spatial DFT and virtual linear arrays improve Wi-Fi angle-of-arrival estimation under strong indoor multipath with fewer antennas.