Communications: directive radio wave systems and devices (e.g. – Determining distance – Phase comparison
Reexamination Certificate
2006-02-28
2006-02-28
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Phase comparison
C342S128000, C342S130000, C342S070000, C342S194000
Reexamination Certificate
active
07006033
ABSTRACT:
An embodiment comprises a unit generating a control pulse signal by delaying a basic signal in generating a transmission pulse, and a unit performing a gate operation on a received signal using the control pulse signal. Another embodiment comprises a unit generating a control pulse signal by delaying a signal generated using a first basic signal, a second signal for phase modulation having a lower frequency than the first signal, and a pseudo-random signal generated at an intermediate frequency between the frequencies of the first and second signals, and a unit performing the gate operation.
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“Practical considerations in pulse-echo radar for short range sensing”, McClanahan, D.L.; Zuercher, J.C.; Misra, D.; Instrumentation and Measurement, IEEE Transactions on, vol.: 47, Issue: Oct. 5, 1998 Ps: 1078-1084.
Dooi Yoshikazu
Hamada Kazuaki
Ishii Satoshi
Seki Tetsuo
Yatsuka Hiroyuki
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