The present invention provides a method and apparatus for effecting, in a ssive manner, the acquisitioning of a broadband barrage jammer type radar target, by detecting the differential delay between the barrage signal as received at a predetermined location over direct and indirect paths and producing a signal distinctly identifying the location of the jammer target relative to the receiving station. More specifically, the present invention includes means for generating reference pulses of vary...

An MOS device with a floating gate and a conductively connected gate is operated in that pulses are applied to the latter gate to capacitively charge the floating gate, and the drain potential is compared in-between pulses with the analog signal. Pulse application is stopped when agreement has been reached.

A data acquisition system capable of resolving transient pulses in the subnanosecond range. A pulse in an information carrying medium such as light is transmitted through means which disperse the pulse, such as a fiber optic light guide which time-stretches optical pulses by chromatic dispersion. This time-stretched pulse is used as a sampling pulse and is modulated by the signal to be recorded. The modulated pulse may be further time-stretched prior to being recorded. The recorded modulated pul...

A data acquisition and display device for acquiring and displaying the time history of the variations in an analog value includes digital circuitry which employs a staircase voltage generator operated at a first frequency to quantize a range of analog voltages which correspond to the expected variations in the analog value. When the staircase voltage equals an analog voltage corresponding to the instantaneous value of the analog value, a memory device is conditioned to receive data corresponding...

An optical gunsight retractably mounted on the canopy rail of an aircraft having a luminous pip or reticle for sighting a target. The gunsight may be boresighted in azimuth and elevation to any onboard target designation system to aid in immediate target acquisition by that onboard designator system.

A method and device utilizing a dynamic random access memory (RAM) image sensor which has a transparent window through which a lens can focus an image on an array of radiation sensitive cells of the dynamic RAM. The cells of the dynamic RAM are set to a fully charged state. The dynamic RAM is scanned in a sequence of steps for purposes of providing a series of images of variable exposure lengths. These series of images of variable exposure lengths are then stored in a memory. The series of image...

An adaptive image acquisition system employing a hand-held optical scanner or camera is disclosed. The system includes an adaptive camera exposure control system to adjust the camera exposure time to the media's reflectivity characteristics. The system assembles a "filmstrip" of images from compressed video data, wherein redundant image data appearing in successive image frames has been removed. The system employs a correlation process between successive frames to identify the redundant frame in...

Apparatus for facilitating the rapid acquisition of bioelectric physiological data from aquatic mammals without requiring the use of engirdling straps or time consuming preparational procedures. A feature of the disclosure is the employment of a plurality of electrodes respectively disposed within flexible cups connected to a vacuum system, the action of the latter serving to establish and maintain tight physical engagement between each of the electrodes and the tissue of the mammal being tested...

As apparatus for sensing reflected light patterns in the presence of a welding arc has an image-sensing means. Means is provided for directing one or more pulses of light of short duration at a workpiece. Each pulse has a peak intensity greater than that of the welding arc. A means is provided for blocking the light image from the sensing means except during a pulse from the light-directing means. An image sensing process includes the steps of directing light at the workpiece in one or more puls...

An analog data acquisition device fetches a plurality of analog data by a multiplexer in time-division, compares the analog data fetched with a reference value applied from a digital-to-analog converter by a two-input comparator, and produces the result of comparison to a data bus. The result of comparison is also applied to a successive approximation register where the analong-to-digital conversion is effected by successively changing the digital data to the digital-to-analog converter, and the...