Patent ID: 8018372

Claim:
A spread spectrum radar apparatus that detects an object using detection radio waves that are spectrum-spread, said apparatus comprising: a local oscillator that generates a narrow band signal; a transmission code generator that generates a first pseudo-noise code; a reception code generator that generates a second pseudo-noise code obtained by delaying the first pseudo-noise code; a spread modulator that spread-modulates the narrow band signal generated by said local oscillator, using the first pseudo-noise code; a transmitter unit configured to transmit the signal spread-modulated by said spread modulator; a receiver unit configured to receive reflected waves of the signal transmitted by said transmitter; a spread demodulator that spread-demodulates a signal corresponding to the reflected waves received by said receiver, using the second pseudo-noise code; a mixer that generates a radar signal by frequency conversion using the signal spread-demodulated by said spread demodulator and the narrow band signal generated by said local oscillator; and a virtual image determiner configured to determine a virtual image from the radar signal having a frequency obtained by said mixer.