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/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

A new method for the line-of-sight velocity estimation of a high-speednear-Earth object (asteroid, meteorite) is suggested. The method is based onuse of fractional, one-half order derivative of a Doppler signal. The algorithmsuggested is much simpler and more economical than the classical one, and itappears preferable for use in orbital weapon systems of threat response.Application of fractional differentiation to quick evaluation of mean frequencylocation of the reflected Doppler signal is justified. The method allows anassessment of the mean frequency in the time domain without spectral analysis.An algorithm structure for the real-time estimation is presented. The velocityresolution estimates are made for typical asteroids in the X-band. It is shownthat the wait time can be shortened by orders of magnitude compared withsimilar value in the case of a standard spectral processing.

On Protecting the Planet Against Cosmic Attack: Ultrafast Real-Time Estimate of the Asteroid's Radial Velocity