English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Rotary-wing unmanned aerial vehicles (UAVs) can be potentially used in wireless communications and therefore attract research from both academia and industry recently. However, most UAV air-to-ground channel models under 6 GHz have ignored the micro-Doppler effects due to the UAV&#x2019;s propellers. In this letter, we reveal its principle and develop a method to estimate the micro-Doppler, including sounding waveform design, channel modeling, and Doppler frequency estimation. Our simulation results demonstrate that the estimated root-mean-squared error of micro-Doppler is smaller than 18.83 Hz for 963.09 Hz micro-Doppler frequency shift resulting from the rotation of the propellers in the rotary-wing UAV sub-6 GHz communications systems.

Micro-Doppler Shift and Its Estimation in Rotary-Wing UAV Sub-6 GHz Communications