Spectral analyzer and direction indicator and aircraft landing s

Details Spectral analyzer and direction indicator and aircraft landing s Spectral analyzer and direction indicator and aircraft landing s

1989-06-30

1990-10-30

Evans, F. L.

Optics: measuring and testing

For optical fiber or waveguide inspection

356141, 356328, G01J 336, G01B 1126

Patent

active

049664565

ABSTRACT:
A spectral analyzer and direction indicator system (10) is disclosed and includes optical channels (20,30,40) for providing detected optical information indicative of incidence direction and spectral content of incident radiation. Each optical channel includes a reflector element (11,17,23) having a non-ruled section (11a,17a,23a) and a spectrally dispersing ruled section (11b,17b,23b); an analytical optical system (13,19,25); and a detector array (15,21,27). For each reflector element the non-ruled section is tilted in one or two directions relative to the ruled section. The disclosed spectral analyzer and direction indicator system is advantageously utilized as an aircraft based sensor in an aircraft landing system having ground lasers (29L,29R,33L,33R,37L,37R) directed into the landing approach path.

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