Raytheon Company

Gregary B Prince

Steven J Howard

Thomas E Gardiner

George Vachula

John P Pehowich

Christopher S Joines

A system and method for transmitting packets from a transceiver to a repeater in the presence of relative motion between the transceiver and the repeater. In some embodiments, the method includes: adjusting a plurality of transmission times; transmitting each of a plurality of packets, at a respective adjusted transmission time, from the transceiver to the repeater; and retransmitting, by the repeater, each of the packets, at a respective retransmission time, each of the retransmission times being, as a result of the adjusting, more nearly the same as it would have been, in the absence of: the relative motion, and the adjusting.

System and method for mitigating platform motion in a communications system

Generally described herein are methods and systems for sample rate conversion of non-integer and integer factors. In one or more embodiments an apparatus can include a sample rate converter that can include an input configured to receive an input signal with a first frequency and an output configured to provide an output signal with a second frequency different from the first frequency. The sample rate converter can include a filter coefficient lookup table and a numerically controlled oscillator configured to provide filter coefficients from the filter coefficient lookup table at a rate that is a function of the first frequency and the second frequency. The sample rate converter can include a multiplier configured to produce an output that is the product of a filter coefficient of the filter coefficients from the numerically controlled oscillator and a sample of an input signal and an accumulator configured to sum an output of the multiplier and provide a result of the summation when the accumulator receives an indicator to dump the result.

Low complexity non-integer adaptive sample rate conversion

In one aspect, a method to discover and prevent a communications disruption in a mobile environment includes receiving data at a mobile platform from a geographical database, determining if the mobile platform will be blocked by a blockage event from accessing a network in response to data extracted from the geographical database and avoiding the blockage event if the mobile platform will be blocked from accessing the network.

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Marlborough, MA, United States of America

Gregary B Prince