Method and device for locating and identifying objects by means

Details Method and device for locating and identifying objects by means Method and device for locating and identifying objects by means

1996-05-23

1998-10-13

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Synthetic aperture radar

342 42, 342 45, G01S 1390, G01S 1378

Patent

active

058218955

ABSTRACT:
A method and device for locating and identifying objects uses an encoding transponder in combination with the use of an SAR device carried in aircraft and spacecraft. Signals transmitted by the SAR device are received by the transponder are provided with an additional dominant signal structure and subsequently retransmitted back to the SAR device. Once the modulated code sequence is known, a signal correlation can be carried out between the signals output by the transponder and the signal reflected from the environment.

REFERENCES:
patent: 5001486 (1991-03-01), Bachtiger
patent: 5486830 (1996-01-01), Axline, Jr. et al.
patent: 5495248 (1996-02-01), Kawase et al.
patent: 5497158 (1996-03-01), Schmid et al.
W.M. Kemp and N.M. Martin; A Synthetic Aperture Radar Calibration Transponder AT C-Band; record of the IEEE International Radar Conference (Cat. No. 90CH2882-9), pp. 81-85, 1990.
R. Schenk et al; Proceedings of the 7th Australian Microelectronics Conference; A Single Chip DSP for Multiple Echo Transponders; pp. 93-101.

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