Rain-Resilient UAV Wireless Links
Official patent title
System and method for mitigating rain-induced crosstalk in wireless communications
Arabic title: نظام وطريقة للتخفيف من التداخل المتبادل الناجم عن المطر في الاتصالات اللاسلكية
Invention
Invention
Problem
Heavy rain can attenuate and differentially shift orthogonally polarized UAV communication channels, degrading cross-polarization discrimination and link integrity as altitude and weather change.
Why it matters
Reliable airborne links matter for emergency response, inspection, surveillance, and autonomous operations, particularly where severe rainfall coincides with limited terrestrial connectivity.
Approach
The UAV senses rainfall and altitude, calculates polarization-specific phase and attenuation effects, derives a pre-equalization parameter, and adjusts amplitude and phase before a dual-polarized MIMO signal is transmitted.
Who may benefit
Potential beneficiaries include UAV operators, wireless-equipment developers, emergency-service networks, telecommunications researchers, and organizations operating aerial links in high-rainfall regions.
Potential value
The architecture combines onboard environmental sensing with transmit-side polarization correction so that compensation can change with rainfall intensity, height, and elevation angle rather than remain fixed.
Background
Background
Orthogonally polarized channels increase wireless capacity, but rain can scatter and absorb radio energy differently across polarization paths. An airborne link also changes geometry as the vehicle climbs, descends, or moves relative to its receiver. Fixed equalization may therefore be insufficient during rapidly changing storms. The disclosed approach adds rain and altitude measurements to a transmit-side compensation loop. Its practical value will depend on sensor accuracy, channel-model fidelity, computational delay, antenna calibration, power consumption, and verified performance during actual flights.
Technology overview
Technology overview
A dual-polarized MIMO array uses onboard rain and altitude sensors, a processing unit, and an equalization circuit to correct phase and amplitude before transmission. Claims specify rainfall calculations from 50–200 mm/h, UAV heights of 100–2,000 m, operation from 5–100 GHz, and measurement-to-adjustment latency below 200 ms. Further claimed settings include +45°/−45° polarization, continuous or packet updates, and correction of phase-shift disparity exceeding 30 degrees per kilometer; these are configured claim limits, not reported test results.
Potential applications
Potential applications
- UAV communications in heavy rainfall.
- Airborne 5G and 6G link research.
- Emergency and rescue communication links.
- Tropical-region aerial network operations.
- Weather-adaptive dual-polarization studies.
Evidence-supported advantages
Evidence-supported advantages
- Uses real-time rain and altitude inputs.
- Corrects phase and amplitude by polarization channel.
- Supports continuous and packet-based updates.
- Targets a claimed 5–100 GHz operating span.
- Co-locates processing and equalization onboard the UAV.
Development stage
Development stage
A system architecture and configured operating ranges are described; prototype, flight, and rain-channel performance tests were not established. The development stage was not independently verified.
Commercial opportunity
Commercial opportunity
The system could support weather-resilient UAV radios or an adaptive modem module. Commercialization requires calibrated rain-channel models, chamber and field trials, measured XPD, error-rate and throughput gains, flight-weight and power budgets, antenna-array integration, sensor-fusion reliability, certification, and interoperability with deployed 5G or future 6G equipment.
Patent classifications
Patent classifications
WIPO IPC
- H04B7/005Transmission
- H01Q21/24Antennas, i.e. radio aerials
- H04B7/0417Transmission
CPC
- H04B7/005Transmission
- H01Q21/24Antennas, i.e. radio aerials
- H04B7/0417Transmission
Inventors
Inventors
- First inventorMohamed Yehia Mohamed Shalaby
- InventorSulaiman S. Alsowayan
- InventorAbdulrahman M. Shalaby
Keywords
Keywords
- rain crosstalk
- dual polarization
- MIMO antenna
- UAV communication
- pre-equalization
- phase correction
- 5G
- 6G
Patent document and drawings
Patent document and drawings
The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.