A CLIMAX-network-compatible receiver with squelch capability comprises a demodulator for processing RF and IF, a squelch gate in the intelligence processing channel, and squelch gate control circuitry connected between the demodulator IF (or demodulator RF) and the squelch gate. In the control circuitry, a swept band (i.e., swept frequency) type of spectrum analyzer receives the demodulator IF and outputs a waveform whose envelope represents all the frequency components in the tested IF band. Th...

An improved method of spectral analysis suitable for use in microwave landing systems comprising sampling an unknown signal whereby nulls associated with a Sin x/x distribution are identified to facilitate the identification of a wanted signal.

Two signals are correlated in a properly programmed digital computer to render a result reflecting the difference in time of arrival of the two signals at separate receiving stations from a common emitter station. Signals received at each of the receiver stations are converted into digital data and transmitted via a data link to a central correlation station. At the central correlation station, the individual digital signals are checked for magnitude and power content prior to conversion into th...

A spectral dosimeter for detecting both the fluence and the energy spectrum or ionization density spectrum of high energy radiation comprising multiple MOS capacitors on a single semiconducting integrated circuit chip which collect ionization charge generated by high energy particles passing in the vicinity of the individual capacitors. The capacitors are individually read by comparison with reference capacitors. The capacitors are fabricated or operated such that varying amounts of collected ch...

A spectral converter which is to be used to produce chemical reactions. Full spectrum solar radiation is received, concentrated and directed into a blackbody collector. The collector converts the energy of solar radiation into heat. The collector then conducts the heat to a vapor phase material, such as selenium or mercury, which then re-emitts the energy as line spectra or broad band spectra. This radiated emission is caused to be directed in a particular direction from the collector through a ...

Absolute optical density measurements in the reflection mode as well as the transmission mode are possible with the single beam spectral densitometer. The light source is movable at a fixed radius about a point located centrally of an aperture provided in a support on which a specimen to be investigated is placed, making it possible to use the same light source for the transmission and reflection mode. With the light source as described, the calibration obtained with the light source positioned ...

A spectral densitometer system reads dosimeter cards. The cards contain bar codes with information for calibration of the system and for identification of the cards (serial numbers for each card). The densitometer has compartments optically and physically separated by a mechanism which contains a slide for receiving the cards and moving them into alignment with openings which expose the bar code to a bar code scanner in one of the compartments. The compartment containing the scanner also contain...

A compact, lightweight, and inexpensive spectral analyzer (10) that creates a highly concentrated and collimated beam of light and that has a long optical path length that improves the analyzer's signal-to-noise ratio is disclosed. The spectral analyzer includes an optical collector assembly (12), a specimen holder (14), and an optical detector (16). The collector assembly includes a collector housing (18) having a plurality of spaced, internally reflective walls (22,24) and an exit aperture (26...

Within a surveillance system there is included optical processor means for receiving a multispectral light image at an input and providing a spectrally modified image at an output, which comprises: an input means for receiving a light image; light dispersing means coupled to said input means for dispersing said received image into a constituent plurality or spectral components and distributing said plurality of spectral components over a predetermined area; means located in said area responsive ...

A wide variety of reactions can be advantageously affected and directed by a spectral catalyst which duplicates the electromagnetic energy spectral pattern of a physical catalyst and when applied to a reaction system transfers a quanta of energy in the form of electromagnetic energy to control and/or promote the reaction system. The spectral catalysts utilized in this invention can replace and/or augment the energy normally provided to the reaction system by a physical catalyst. A spectral catal...