Abstract: A radar which can be used in a system for identifying coded objects. A passive encoding array (label) for an object and having dipoles at selected dipole locations in the array, and a radar for scanning the array as it crosses the radar beam. The radar utilizes a doppler receiver and a matched filter processor to detect one of doppler, FM, and AM modulated FM signals from crossing targets. The radar output is a pulse code with pulses corresponding to the dipoles of arrays illuminated by the radar.

Abstract: A superconducting energy storage system comprising storage elements arrayed in a transmission line for receiving, storing, and reproducing charges in the form of current. The system stores charges in potential wells inside elements and moves the charges (representing stored energy) by applying external transfer voltages for moving the potential wells. The energy stored is increased by resonating the storage elements and/or by imparting kinetic energy to the stored charges. The system may be modified to store vortices instead of charges.

Abstract: A system for digital signal processing, including a random access memory (RAM) accessed by counters and used for storing and shifting signals in a convolver, correlator, matched filter or multiplier. An input signal and a reference signal are applied from opposite ends of the device such that the signals scan past each other at a relative velocity with respect to each other for obtaining either the convolution or correlation function of signals. The RAM operates as a shift register delay line and provides time scale inversion of signals when desired.

Abstract: A beam focused synthetic aperture having a lens or antenna for receiving radiation in a receiving beam from an object of interest, a detector for receiving radiation from the lens or antenna, and an output and display circuit for using and viewing the detector output, with delay means internal or external to the lens or antenna and between the object and detector and for producing the matched spatial filtering of signals from objects crossing the receiving beam, and with the detector producing a pulse for each object crossing the receiving beam.

Abstract: A system for digital signal processing, including a random access memory (RAM) accessed by counters and used for storing and shifting signals in a convolver, correlator, matched filter or multiplier. An input signal and a reference signal are applied from opposite ends of the device such that the signals scan past each other at a relative velocity with respect to each other for obtaining either the convolution or correlation function of signals. The RAM operates as a shift register delay line and provides time scale inversion of signals when desired.

Abstract: In a recursive (zeros and poles) filter having input and output signals y and y.sub.o and having impulse response h.sub.r apparatus and method for obtaining the convolution y.sub.o = y * h.sub.r using either the convolution integral or using the discrete Fourier transform (DFT). When using the convolution integral the apparatus first computes the impulse response h.sub.r then obtains the response y.sub.o in a convolver while when using the DFT the apparatus first computes the transfer function H.sub.r then obtains the frequency spectrum Sy.sub.o of response y.sub.o. By implementing the recursive filter as a matched clutter filter, the error normally associated with this type filter is minimized.

Abstract: A system for information transfer and object identification. A record or label having resolution elements forming an image or code, and a coherent optical system including light source, detector, and data processor for reading records and labels moving relative to the optical system. The optical system output is a pulse train of time compressed pulses with pulses corresponding to the resolution elements of a record or label illuminated by the light source, the plurality of pulses forming the image or code.

Abstract: A system for concealing radar targets. A chaff system with low deadweight ratio, low chaff birdnesting, lossless wire performance, low vulnerability and high dispensing reliability. A chaff system for masking large size targets viewed at low radar frequencies.

Abstract: A system for digital signal processing including a random access memory accessed by counters and used for storing and shifting signals in a fast Fourier transformer (FFT).

Abstract: A system for digital signal processing, including a random access memory accessed by counters and used for storing and shifting signals in a time compressor matched filter or correlator.