Method for two dimensional doppler imaging of radar targets

Details Method for two dimensional doppler imaging of radar targets Method for two dimensional doppler imaging of radar targets

1993-06-29

1994-07-12

Hellner, Mark

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

Testing or calibrating of radar system

G01S 740

Patent

active

053292863

ABSTRACT:
A method for two dimensional imaging of a two or three dimensional target is disclosed. As shown, a radar transmitter transmits a beam on a beam axis originating at a position spaced from the target and a radar receiver receives return signals from the target. The stationary radar observes the precessing target whose normal to the two dimensional target plane (or whose axis through a three dimensional target) intersects the transmitted beam axis at a point, and forms a cone half angle with the beam axis. With the normal (or target axis) moving along a conical surface while precessing 2 Pi around the beam axis, signal returns from the target are processed to develop a two dimensional image of the target. The process is repeated at other cone half angles and a composite, reduced-sidelobe image generated by vectorial superposition of images at multiple cone half angles.

REFERENCES:
patent: 4527161 (1985-07-01), Wehner
patent: 4562439 (1985-12-01), Peralta et al.
patent: 4768156 (1988-08-01), Whitehouse et al.
patent: 4855747 (1989-08-01), Steinberg
patent: 4910523 (1990-03-01), Huguenin et al.
patent: 5075681 (1991-12-01), Kartiala
patent: 5140331 (1992-08-01), Aulenbacher et al.

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