Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Patent
1997-01-14
1999-10-26
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
342 82, 342 88, 342109, G01S 1393, G01S 1342
Patent
active
059736364
ABSTRACT:
A single antenna is used so that time-division transmission and reception is carried out in a radar apparatus for obtaining a distance and a relative speed with respect to a target object based on a beat signal obtained by transmitting a frequency modulated signal and mixing a received signal reflected by said target object with the frequency modulated signal that is transmitted.
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patent: 5381153 (1995-01-01), Saito, et al.
patent: 5402129 (1995-03-01), Gellner et al.
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Saito et al., "An FM-CW Radar Module With Front-End Switching Heterodyne Receiver", International Microwave Symposium Digest (MTT-S), Albuquerque, Jun. 1-5, 1992, Vol. 2, Jun. 1 1992, pp. 713-716, XP000343419.
M. I. Skolnik, Introduction to Radar Systems, 1980, McGraw Hill, Singapore, Section 3.3, "Frequency-Modulated CW Radar", Subsection "Range and Doppler Measurement", pp. 80-92, XP002083437.
McGregor et al., "Switching system for single antenna operation of an S-band FMCW radar", IEE Proceedings Radar, Sonar and Navigation, vol. 141, No. 4, Aug., 1994, pp. 241-248, XP000458143.
European Search Report (Application No. 97100604.4) dated Apr. 12, 1999.
Isaji Osamu
Ninomiya Teruhisa
Okubo Naofumi
Saito Tamio
Fujitsu Ltd.
Fujitsu Ten Ltd.
Sotomayor John B.
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