Abstract: A high-amperage current sensor is disclosed which is suitable for use in an automotive electrical system and which is operatively unaffected by changes in ambient temperature. The current sensor utilizes a shunt assembly having at least one low-resistance shunt element connectable in line between a source of electrical energy and a load. Circuitry preferably configured on an application specific integrated circuit measures voltage drop across the shunt element due to current flow. As a result, an output signal is produced which may be fed to external circuitry for further processing. In presently preferred embodiments, the sensor may comprise analog circuitry producing an analog output signal and/or digital circuitry producing a digital output signal.

Abstract: Both a system and a method for simulating targets for a radar system is disclosed herein which generally comprises a test target generator having an input slaved to the pulse transmit frequencies of the radar system for generating a target simulating signal, a horn antenna for emitting the target simulating signal back to the radar receiver, a laser-operated optical transmission link having a single mode fiber optic cable for transmitting the target simulating signal from the test target generator to the horn antenna via optical carrier, and an amplification and processing circuit system connected between the output of the optical transmission link and the input of the horn antenna for increasing the amplitude of the target simulating signal to a level that is detectable by the radar receiver, and for further processing the signal.

Abstract: A high-speed universal scaler operates in real time, accepting as an input an N-bit binary data word which is to be scaled (multiplied) by a scale factor specified in units per bit. The input data word is divided into M-bit sections which are provided (together with a count value indicating the position of the M-bit section within the input data word and a scale indicator value specifying which of a plurality of programmed scale factors values is to be used) sequentially as scaling addresses specifying binary coded decimal scale data in a scale memory. The sequential outputs of the scale memory in response to the scaling addresses are summed. When the sequence of addresses has been completed and all of the sequential memory outputs have been summed, the resulting sum will be a scaled binary coded decimal value equivalent to the input data word.

Abstract: Apparatus and a method for generating simulated target signals for testing a radar system is disclosed. The fundamental timing intervals for each pulse of the simulated target signal are generated based upon the contents of a high-speed continuously running digital counter. The resolution of the system is determined by the clock rate utilized to increment the counter. Simulated target signals are generated by utilizing an adder to add the desired range to the contents of the counter at a time interval corresponding to each pulse of the radar sync signal. The output signal of the adder corresponds to the expected output of the counter at a time corresponding to the return pulse associated with the transmit sync signal. These values are stored in a digital memory at sequential address locations. The stored values are sequentially read to produce at the output of the memory a digital signal corresponding to the value of the high-speed counter at the time that the return pulse is to be generated.

Abstract: The maintenance port system includes a maintenance unit, user prom, an available CRT terminal, and a prom software development package. This system accepts parametric definitions for an automatic panel as defined by the designer, and formats the panel data for display and modification on a CRT (cathode ray tube) terminal. Because the system controls the formats, standard display and modification procedures are then used for transmitting and receiving parameters and are the same from panel to panel.