22.01.2015 Views

(IVAR) - Final Report - Strategic Environmental Research and ...

(IVAR) - Final Report - Strategic Environmental Research and ...

(IVAR) - Final Report - Strategic Environmental Research and ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Figure B-16. The polygon around the red pushpin delimits the sample area for the eBirdRad data<br />

collected with a 30° tilt.<br />

The TVW has a “speed filter” feature that can be set to remove from further processing the<br />

tracks of targets that are moving above or below a specified speed. The speed filter was not used<br />

to remove insect <strong>and</strong> other targets that were moving about the same speed as the wind, but a<br />

filter was used for targets traveling more than 40 m/s to prevent the generation of tracks<br />

produced by aircraft. Insect tracks were identified based on speed on a track-by-track basis.<br />

Bats were distinguished by their erratic tracks <strong>and</strong> sharp turns. The sampling volumes of the two<br />

devices were calculated based on their characteristics (Table B-3).<br />

326

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!