  We investigate the feasibility of detecting extensive air showers by the
radar technique at viewing angles smaller than $\sim 25^\circ$ to the shower
axis. Considering a bistatic radar setup and shower geometries in which the
receiver points into the arriving shower, we simulate reflection of radio waves
off the short-lived plasma produced by the high-energy shower particles in the
air. Using the Thomson cross-section for scattering of radio waves and summing
coherently contributions of the reflected radio wave over the volume of the
plasma disk, we obtain the time evolution of the signal. We analyze the
spectral power density of the radar echo and the received power. Based on the
obtained results, we discuss possible modes of the radar detection of extensive
air showers.

High Energy Astrophysical Phenomena