Abstract: Provided is a method and system for noise-driven recovery of a digital pulse stream. The method includes receiving initial parameters including the base characteristics of a pulse signal, the characteristics including the minimum pulse interval. An incoming analog signal is converted to a digital signal and sampled a predetermined number of times at intervals less than the minimum pulse interval to record a set of minimum signal values. The incoming signal is also sampled a predetermined number of times at intervals less than the minimum pulse interval to record a set of maximum signal values. At least the first greatest value from the set of maximum signal values is discarded. Each set is averaged to provide an average minimum value and an average maximum value. Based on these values at least one threshold value is then determined, and the digital pulse stream is identified based on the threshold values.

Abstract: Provided is a method and system for signal-driven recovery of a digital pulse stream. The method includes receiving initial parameters including the base characteristics of a pulse signal, the characteristics including the maximum pulse interval. An incoming analog signal is converted to a digital signal and sampled a predetermined number of times at intervals greater than the maximum pulse interval to record a set of minimum signal values and a set of maximum signal values. Each set is averaged to provide an average minimum value and an average maximum value. Based on these values at least one threshold value is then determined, and the digital pulse stream is identified based on the threshold values. The method is repetitive, continually re-determining the threshold values so as to adapt to changes in the incoming signal. A system for performing the method is also provided.

Abstract: Provided is a method and system for signal-driven recovery of a digital pulse stream. The method includes receiving initial parameters including the base characteristics of a pulse signal, the characteristics including the maximum pulse interval. An incoming analog signal is converted to a digital signal and sampled a predetermined number of times at intervals greater than the maximum pulse interval to record a set of minimum signal values and a set of maximum signal values. Each set is averaged to provide an average minimum value and an average maximum value. Based on these values at least one threshold value is then determined, and the digital pulse stream is identified based on the threshold values. The method is repetitive, continually re-determining the threshold values so as to adapt to changes in the incoming signal. A system for performing the method is also provided.

Abstract: Aerial dispersion systems that may be employed to allow rapid and temporary conversion of aircraft for aerial dispersion purposes, such as aerial fire-fighting. The aerial dispersion systems may be implemented using modular components that may be configured for compatibility with conventional cargo loading and unloading systems of modern aircraft, including side-loading cargo systems of wide body passenger and cargo aircraft having high lift capacities. The aerial dispersion systems may be rapidly installed in a large fleet of high capacity aircraft in response to a wildfire or other rapidly-developing emergency such as an oil spill, chemical or biological contamination incident, building or refinery fire, etc. After use, the aircraft of the fleet may be rapidly de-modified and returned to original condition.

Abstract: Multiple cochannel AM signals received in an overloaded signal environment may be separated using RF data through a method of iterative projections.

Abstract: Non-multiple delay element values that may be implemented to reduce periodic quantization errors associated with phase shifting devices used in phased array apparatus. The non-multiple delay element values may be implemented so that a magnitude of phase shift imparted by a given delay element of a phase shifting scheme is not a multiple or a factor of the magnitude of the phase shift imparted by any other delay element employed in the same phase shifting scheme.

Abstract: Memory devices used to control delay line circuitry, and that may be implemented in one embodiment to provide a self-tuning delay line device using empirical calibration technique/s to achieve a desired signal delay. The memory control device may be implemented to store electrical characteristics of the delay line circuitry during testing to enable self-calibration of the delay line circuitry.

Abstract: A write protection mechanism may be implemented that is external to a non-volatile memory device and/or that is external to controller/s that interface with the non-volatile memory device, thus providing increased security over unauthorized and/or undesirable write cycles to the memory device. Write protection security may be further enhanced by providing a write protection control signal that is external to the non-volatile memory and attached memory controller/s, thus preventing accidental or intentional override.

Abstract: A signal source identification system and associated method are disclosed that utilize wavelet-based signal processing to facilitate signal source identification. In particular, the wavelet-based signal processing enables the extraction of fingerprint type signatures for signal sources using wavelet packet processing, and supplementary signal processing can be used to further enhance the accuracy of the system. This signal source identification system can be used for identifying signal sources within a received data signal, used for providing security features by verifying the identify of a transmitting device, and/or used in other environments where it is desirable to identify or differentiate among signal sources. Other features and variations can be implemented, if desired.

Abstract: Systems and methods for analog to digital conversion that may be implemented using a digital to analog converter (DAC) to provide negative feedback to at least Partially cancel one or more signals (e.g., one or more interfering signals present with one or more desired signals, one or more strong desired signals, etc.) at the analog input of an analog to digital converter (ADC), and that may be used to extend the effective dynamic range of an ADC. The effective dynamic range of an ADC may be extended by detecting and isolating signals and using digital adaptive digital filtering along with a digital to analog converter (DAC) to provide negative feedback to cancel the signal/s at the input of the ADC.

Abstract: A write protection mechanism may be implemented that is external to a non-volatile memory device and/or that is external to controller/s that interface with the non-volatile memory device, thus providing increased security over unauthorized and/or undesirable write cycles to the memory device. Write protection security may be further enhanced by providing a write protection control signal that is external to the non-volatile memory and attached memory controller/s, thus preventing accidental or intentional override.

Abstract: Systems and methods for analog to digital conversion that may be implemented using a digital to analog converter (DAC) to provide negative feedback to cancel signals at the input of an analog to digital converter (ADC), and that may be used to extend the effective dynamic range of an ADC. The systems and methods may be implemented in multi-channel environments.