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US Government As Represented by the Secretary of the Army

James W Hoffman

Ronald C Grush

A sensing cavity is directed towards the radiation to be measured. An identical reference cavity is directed towards a heat sink which is maintained at a constant temperature. An electric heater and a temperature sensor are mounted on both the sensing cavity and the reference cavity. The temperature sensors are connected to a bridge which is powered only when an observation is made. The heater on the sensing cavity is controlled by bridge imbalance to equalize the temperature of the two cavities. The heater power is then a direct measure of the difference in the power entering the sensing cavity and the power entering the reference cavity. By knowing the power entering the reference cavity, the power entering the sensing cavity can be calculated. The two cavities are mounted together to a common heat sink and have a directly associated preamplifier circuit included in the modular mounting. A plurality of such sensors is used to obtain radiance measurements in many directions simultaneously.

Earth radiation array sensing system

A convertible livestock/grain hauling trailer has front, center and rear compartments, with a second livestock floor in the center compartment. Means are provided for pivoting the floor boards of the second floor downward towards front and rear to define a pair of grain hoppers, and adjustable grain outlet doors are provided in the floor board at the base of the hoppers. Support rail hangers are provided along the side walls of the trailer corresponding to both the horizontal and slope positions of the second story floor boards, and support rails for the edges of the floor boards are movable from either set of hangers to support the floor board in its corresponding position. Front and rear bull gates are optionally pivotable towards the front and rear respectively to further define the grain hoppers, and support rails are provided to hold them in position. Tarps are provided on rollers in the interior of the trailer to cover the livestock ventilation slots when the trailer is being used as a grain hauling trailer.

Convertible livestock-grain trailer

Each of the parameters of objects in the field of view is measured and inidually compared with standard parameters. Differences in these parameters are multiplied by individual weighting factors and they are summed for each object. Object having the lowest sum is the desired target.

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Solana Beach, CA, United States of America

James W Hoffman