Detection and ranging apparatus and detection and ranging method
A technology of distance measuring device and computing device, which can be applied to measuring devices, radio wave measuring systems, instruments, etc., and can solve the problems of time shift, reduction of detection distance, and signal deterioration
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[0020] FIG. 1 shows a radar device according to one embodiment of the invention. The embodiment shown in Fig. 1 is similar to that in JP 2006-98181A, using N antenna elements A R1 to A RN The receiving array antenna and the two sides of the receiving array antenna include 2 (M=2) antenna elements A T1 and A T2 transmitting array antenna.
[0021] An oscillator module (oscillator module) 10 includes an oscillator 12 and a voltage-controlled RF (radio frequency) oscillator 14 for generating a baseband signal (such as a triangle wave), the frequency of the voltage-controlled RF oscillator 14 is controlled by the output of the oscillator 12, and the oscillation The transmitter module 10 generates a transmission wave whose frequency is modulated by the triangular wave. The code generator 20 generates two PN codes 1 and 2 that are orthogonal to each other. In Modulator 16 1 and 16 2 Among them, using PN codes 1 and 2, binary phase-shift keying (BPSK) spread spectrum is direct...
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Abstract
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