Figure 12.
TX1-Doppler Shift (fd): (a) car velocity of 40 km/h, (b) car velocity of 60 km/h.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.