Incoherent optical ambiguity function generator
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorRichard P. Bocker
Life of this patent
Estimating the term…
Abstract
An electro-optical system for performing the computation of the radar ambiguity function or other similar mathematical function using the parallel processing capability of optical systems including a photo-responsive, real-time programmable mask for storing a set of sample values {s.sub.p }. A light source is positioned to illuminate the mask and have its intensity modulated as a function of the sample values {s.sub.p }. The image from the programmable mask is transferred to a CCD photo-sensor array that is clocked in synchronism with the light pulse outputs of the light emitting diode to give rise to electro-optical products which are integrated in the CCD structure to yield the ambiguity or other similar mathematical function.
Claims12
An electro-optical system for computing the mathematical function of the discrete sample form ##EQU7## where {s.sub.p } and {x.sub.mn } are sets of numbers representing sampled values of the functions s(t) and x(.tau.,w), respectively comprising:
- a photo-responsive programmable mask for storing said sampled values of {s.sub.p } of the signal s(t);
- a light source positioned to illuminate said photo-responsive programmable mask;
- said light source being responsive to input signals for temporally modulating the intensity of the output of said light source as a function of the said values {s.sub.p };
- a photographically recorded mask having encoded thereon information representative of the values {f.sub.pn };
- an imaging lens positioned for transmitting light radiated by said photographically recorded mask;
- a photo-sensor array positioned to be illuminated by the irradiance from said imaging lens.
An electro-optical system for computing a mathematical function of the form ##EQU8## where {s.sub.p } and {x.sub.mn } are sets of numbers representing sampled values of the functions s(t) and x(.tau.,w), respectively, comprising:
- a line array of light emitting diodes;
- a programmable weighting tap operably-coupled to each element of said line array of light emitting diodes;
- a cylindrical/spherical lens combination positioned to be illuminated by said light emitting diodes;
- and
- an optical CCD array having encoded thereon fixed information representative of the values {f.sub.pn } disposed to be irradiated by the light energy passing through said cylindrical/spherical lens combination.
An electro-optical system for computing the mathematical function of the discrete sample form ##EQU9## where {s.sub.p } and {x.sub.mn } are sets of numbers representing sampled values of the functions s(t) and x(.tau.,w), respectively comprising:
- a photo-responsive programmable mask for storing said sampled values of {s.sub.p } of the signal s(t);
- a light source positioned to illuminate said photo-responsive programmable mask;
- said light source being responsive to input signals for temporally modulating the intensity of the output of said light source as a function of the said values {s.sub.p };
- a photographically recorded mask having encoded thereon information representative of the values {f.sub.pn };
- a contrast control aperture assembly positioned between said light source and said photographically recorded mask;
- an imaging lens positioned for transmitting light radiated by said photographically recorded mask;
- a photo-sensor array positioned to be illuminated by the irradiance from said imaging lens.
An electro-optical system responsive to a source of light for computing the mathematical function of the discrete sample form ##EQU10## where {s.sub.p } and {x.sub.mn } are sets of numbers representing sampled values of the functions s(t) and x(.tau.,w), respectively, comprising:
- a photo-responsive programmable mask for storing said sampled values of {s.sub.p } of the signal s(t);
- a photographically recorded mask having encoded thereon information representative of the values {f.sub.pn };
- an imaging lens positioned for transmitting light transmitted by said photographically recorded mask;
- and
- a photo-sensor array positioned to be illuminated by the transmitted light from said imaging lens.
Dependencies are inferred from the claim text.