Abstract :The quantum radar cross section (QRCS) has becomed a hot topic due to its promising feature of enhanced side lobe effect in comparison with the radar cross section. We have simulated the QRCS for very narrow geometries, namely line targets, for the monostatic case. When the single photon per pulse is incident on the line, we can see the similar enhanced side lobe effect in QRCS curves. And for various sizes or wavelengths, the similar phenomena do still exist. Comparison of our simu...