Holographic system for object location and identification

Details Holographic system for object location and identification Holographic system for object location and identification

1974-07-22

1980-06-24

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Acoustic image conversion

Acoustic holography

367 9, 367103, 367123, 367 11, 343 17, G01S 966, G03H 300

Patent

active

042098530

ABSTRACT:
An arrangement is provided for locating and identifying objects using holographic techniques. Improvements are achieved by array configuration and particularly with the use of a plurality of arrays to provide different types of information related to the same object. In one embodiment, a high resolution narrow field-of-view array is provided in combination with a low resolution wide field-of-view array. The low resolution array resolves the ambiguity for object location and the high resolution array permits object identification; wherein the combination of a high resolution narrow field-of-view array and a low resolution wide field-of-view array provides significant advantages over the conventional high resolution wide field-of-view array.
A general purpose high resolution wide field-of-view array may be provided for obtaining desired information. In a mode requiring high computational rates, portions of the general purpose array may be selected to provide specific information. For example, a high resolution narrow field-of-view sub-array and a low resolution wide field-of-view sub-array may each be part of the general purpose array, selected as a limited set of array points. Processing information from the sub-arrays minimizes the amount of information that must be processed and therefore significantly increases array processing speed.
A frequency control arrangement is also provided for controlling resolution and field-of-view with the transmitted signal frequency.
A signal processing and memory arrangement using charge coupled devices is further provided which are generally useable for signal processing and memory operations and may be used in a preferred embodiment of the present invention.

REFERENCES:
patent: 3356989 (1967-12-01), Autrey
patent: 3613071 (1971-10-01), Quay
patent: 3775738 (1973-11-01), Quay et al.
patent: 3787852 (1974-01-01), Puckette et al.
patent: 3826926 (1974-07-01), White et al.
patent: 3852745 (1974-12-01), Lebail
patent: 3873958 (1975-03-01), Whitehouse
patent: 3895342 (1975-07-01), Mallett et al.
patent: 3942034 (1976-03-01), Buss
Altman, Electronics, Feb. 28, 1972, pp. 62-71.
Baertsch et al., Electronics, Dec. 6, 1971, pp. 86-91.

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