Pulse or digital communications – Receivers
Reexamination Certificate
2007-02-27
2007-02-27
Patel, Jay K. (Department: 2611)
Pulse or digital communications
Receivers
C375S275000, C375S335000, C342S018000, C342S111000, C342S116000
Reexamination Certificate
active
10270864
ABSTRACT:
Disclosed is a real-time pulse sorting apparatus of a preprocessor in a pulsed radiation detection system. The apparatus, responsive to digital signals generated by a system receiver, uses the instantaneous frequency as the address input to store discrete data groups in main memory. Each data group, comprising the digital data corresponding to a single analog-to-digital converter sample point, includes the RF signal amplitude, inter-channel phase difference, instantaneous frequency as well as a unique pulse number generated by the pulse sorting apparatus. The present invention further includes a TOA memory for storing the time-of-arrival of each pulse at an address given by the pulse number. The main memory, organized in the form of a frequency-based histogram, together with the TOA memory, linked to the main memory by means of the pulse number pointer, sorts and records RF signal data with minimal processor control and intervention.
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Pringle Richard Charles
Quan Joanna S.
Alliant Techsystems Inc.
Brooks Michael B.
Michael Blaine Brooks P.C.
Naglestad Andrew S.
Patel Jay K.
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