An important problem in the area of ir focal plane array imaging is the fast and efficient multiplexing and processing of the signals from the detector array. a new approach to this problem utilizing the recently developed acoustic charge transport (act) device is presented. the act device combines… More

In very dense electromagnetic signal environments, a fast analog preprocessor may be of significant value in reducing the burden of a/d converters and digital processors and may substantially reduce response time in ew systems. this proposal seeks to design and evaluate an analog pattern-matching… More

A new class of extremely fast single-chip signal processors based on the emerging technology of acoustic charge transport (act) has recently become available through an intense development effort by darpa and the u.s. air force. one application of this new technology is the multiplexing and… More

This proposal is for the design of a covert communications system based on acoustic charge transport (act) filter technology. this system is covert in that a nearby unfriendly receiver will be unlikely to discover the presence of the transmitted signal, while a more-distant friendly receiver will… More

This proposal describes a program for the development of a frequency channelizer and processor for esm, ecm, communications, or surveillance applications. this system is based on the emerging technology of acoustic charge transport (act) which allows the functions of filtering, delay, detection, and… More

A new computational engine based on the emerging technology of acoustic charge transport (act) has been developed to process analog signals or digital data at speeds more than three orders of magnitude beyond current digital signal processor chips. the act programmable signal processor is a… More

Two or more frequency hop radios operating in a common site create a substantial interference problem because conventional fixed filtering techniques without frequency agility cannot be used to suppress it. a new enabling technology called acoustic charge transport (act) has given rise to a family… More

A unique concept has been developed that uses the performance advantages of wide bandwidth acoustic charge transport (act) delay lines and transversal filters to achieve low probability of intercept and jam resistance in a spread spectrum communications link. rather than the usual stored reference… More

With increasing waveform complexity and emitter density in the tactical electromagnetic signal environment, the job of intercepting and identifying potentially threats has overwhelmed the capabilities of conventional esm receivers. this proposal describes a program to study the application of… More

A new type of range extent simulator has been made possible through recent developments in the emerging microelectronic technology of acoustic charge transport (act). this technology, developed jointly by darpa and the u.s. air force, has enabled the implementation of digitally programmable analog… More

The present system of communication between KC-135/KC-10 tanker aircraft and receptacle-equipped receiver aircraft calls for communication based on aircraft lights. The Air Force requires a system for undetectable verbal communication between tanker and receiver from a range of 1500 meters to point… More