Communications: directive radio wave systems and devices (e.g. – Transmission through media other than air or free space
Patent
1991-12-02
1992-07-14
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Transmission through media other than air or free space
342 74, 342 82, 342 89, 342 85, G01S 1304, H04B 1302
Patent
active
051307111
ABSTRACT:
Subsurface target identification radar includes an antenna array, a rotary encoder, a radar controller, a polarization switching circuit, and transmitter and receiver circuits. The antenna array is constituted by dipole antennas having plane triangle elements. The antennas are disposed at angular intervals of 120.degree. with respect to a rotated symmetric point of the array. The rotary encoder generates a distance pulse every time the radar travels a presetted distance. The radar controller sequentially generates three switching pulses within one period on the basis of the distance pulse from the rotary encoder. The polarization switching circuit selects an arbitrary dipole antenna as a transmitting antenna from the antenna array, selects an arbitrary dipole antenna, other than the selected antenna, as a receiving antenna, and changes a combination of selected antennas every time the switching pulse is generated by the radar controller. The transmitter and receiver circuits transmit/receive electromagnetic waves through the selected antennas.
REFERENCES:
patent: 3967282 (1976-06-01), Young et al.
patent: 4062010 (1977-12-01), Young et al.
patent: 4706031 (1987-11-01), Michiguchi et al.
patent: 4721961 (1988-01-01), Busignies et al.
patent: 4746867 (1988-05-01), Gunton
Jyomuta Chihiro
Kimura Noriaki
Konishi Masuo
Murasawa Kanji
Mitsui Engineering & Shipbuilding Co. Ltd.
Sotomayor John B.
LandOfFree
Subsurface target identification radar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Subsurface target identification radar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subsurface target identification radar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-337861