Abstract: The present invention provides techniques for granting access to secured data. An access candidate may access some or all of the secured data by gaining access to two sequential levels of security. The first security level secures access to the resources used to manipulate the secured data and the second security level secures access to the secured data by the resources. Attributes associated with the access candidate are considered in deciding whether to grant or deny access to the resources. Based on a comparison of access requirements of the secured data with the applicable attributes of the access candidate, a decision on whether to grant access to the requested portions of the secured data is made. If access is not prohibited, the access candidate may use the resources to access the secured data. If access is prohibited without authorization, a resolution request may be submitted to a resolution authority.

Abstract: A Digital Pulse Processor (DPP) designed to accept pulsed inputs and produce digital pulse descriptor word (PDW) outputs accepts pulsed signals from three adjacent channelized inputs. The DPP then derives a measurement of pulse amplitude from the peak value in the center frequency channel. The relative peak amplitudes between channels are used to establish aa fine frequency offset. The fine frequency offset is used in conjunction with coarse frequency inputs to compute a pulse frequency estimate. An internal counter generates a time reference for time of arrival (TOA) and pulse width measurements. The TOA and pulse width measurements are based on calculations to establish three dB points on the leading and trailing edges of the pulse. This pulse characterization information is produced in real time at the optimum signal-to-noise ratio, and is independent of incoming amplitude, rise/fall time, and pulse width.