Patent ID: 6750809
Filing Date: 2004-06-15
Classification: G01S

Abstract:
A method for improving range resolution of a radar receiving linear frequency modulated first radar returns reflected from a transmitted first sub-pulse and second radar returns reflected from a transmitted second sub-pulse,said first transmitted sub-pulse having linear frequency modulation centered about a first center frequency, f1, and transmitted at time t1, said second transmitted sub-pulse having linear frequency modulation centered about a second center frequency, f2, and transmitted at time t2, said second center frequency higher than said first center frequency, said first transmitted sub-pulse and said second transmitted sub-pulse having a linear frequency modulated chirp slope &ggr;, said method comprising the step of sample shifting and phase adjusting said first radar returns reflected from said transmitted first sub-pulse with respect to said second radar returns reflected from said second sub-pulse to form a line of frequency modulated chirp slope &ggr; with respect to time, said line connecting said first center frequency with said second center frequency.