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Thursday, August 24, 2006

Ehanced JTRS Waveform Tested

Northrop Grumman completed the 12th flight test of an enhanced version of the wideband networking waveform (WNW), one of the core technologies of the U.S. military’s Joint Tactical Radio System (JTRS). The recently reorganized JTRS program is attempting to develop a cross-service family of interoperable software defined radios. Northrop Grumman says it demonstrated substantial airborne WNW improvements on its own software defined radios. Northrop’s enhancements to the WNW orthogonal frequency-division multiplexing (OFDM) signal help to deal with challenges encountered in highly dynamic aero environments, such as frequency shifts and multipath interference. The company also says its WNW software helped improve network access speed and range. Tests included communications at more than 100 nautical miles in high-multipath, high-differential Doppler environments. Application data included streaming video, high-resolution still imagery, text messaging and chat. All software was running in a JTRS Software Communications Architecture-compliant environment, the company says. More

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