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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The principle of operation of radar and lidar is similar in that pulses of energy at wavelengths ranging from millimetres to metres for radar and 0.5 to 10 microns for lidar are transmitted into the atmosphere; the energy scattered back to the transceiver is collected and measured as a time-resolved signal. From the time delay between each outgoing transmitted pulse and the backscattered signal, the distance to the scatterer is inferred. The radial or lineof-sight velocity of the scatterers is determined from the Doppler frequency shift of the backscattered radiation. The systems use a heterodyne detection technique in which the return signal is mixed with a reference beam (i.e. local oscillator) of known frequency. A signal processing computer then determines the Doppler frequency shift from the spectra of the heterodyne signal. The energy content of the Doppler spectra can also be used to determine boundary layer eddy characteristics.

Synergy Between Doppler Radar and Lidar for Atmospheric Boundary Layer Research