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Figures (9)

Fig. 1
Fig. 1

Solar concentrator with scalloped gores, resembling a floppy umbrella, would approximate an ideal paraboloidal reflector but could maintain a smaller, more precisely located focal spot in spite of errors in manufacturing and pointing.

Fig. 2
Fig. 2

Using both antennas to receive the echo of the signal transmitted by one of the antennas, the synthetic aperture radar system generates an interferometric map that increases the precision of the final topographical map of the terrain.

Fig. 3
Fig. 3

Scanning across a swath 200 km wide, the radar moves along a track to produce a global map of the rainfall rate.

Fig. 4
Fig. 4

Addition of a channel at 51 GHz to the channels used for making upper atmosphere temperature profiles adds little to the cost of a microwave radiometer. However, the added channel eliminates the need for a separate water vapor radiometer subsystem, with its attendant size, weight, and cost.

Fig. 5
Fig. 5

This real time image processing system relies on holographic optical techniques to recognize and track several independently moving objects.

Fig. 6
Fig. 6

Optical rotation sensor built with integrated optics to simplify the generation of pulses that represent the increments of rotation.

Fig. 7
Fig. 7

Light rays from the weld are transmitted axially through a beam splitter for imaging on one sensor and are reflected to the side by the beam splitter for imaging on another sensor.

Fig. 8
Fig. 8

Speckle pattern of a laser illuminated, seeded flow is recorded in multiple exposure photographs and processed to extract data on the velocity field.

Fig. 9
Fig. 9

Square array of processors emerges directly from using the Faddeev algorithm for the Kalman filter problem.

Equations (3)

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g t = 2 ( π D / λ α ) 2 [ exp ( α 2 ) + exp ( α 2 γ 2 ) ] 2
l p ( θ ) = [ 1 / f 0 2 ( γ ) ] { f 0 ( γ ) + [ f 2 ( γ ) / 2 ! ] ( π D θ / λ ) 2 + [ f 4 ( γ ) / 4 ! ] ( π D θ / λ ) 4 + [ f 6 ( γ ) / 6 ! ]   ( π D θ / λ ) 6 + } 2
γ 2 1 [ exp ( α 2 u ) ] J 0 ( π D θ u 1 / 2 / λ ) d u

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