link : HTS and flat-panel antennas opening new government mobility applications
HTS and flat-panel antennas opening new government mobility applications
Advances in flat-panel antenna technology combined with high-throughput satellites (HTS) are opening up new mobility applications for government users. As we wrote in an earlier blog, the design makes satellite communications a viable option for new airborne, maritime, and ground-mobile applications. Recognizing the advantages of small, flat panel antennas, Intelsat has invested in Kymeta Corp. and the company's meta-materials-based antenna which uses flat-panel, phased-array technology.
"Our partnership with Kymeta is really to support services requiring low-profile antennas that are critical for both the commercial and government customers for satellite mobility applications," Mohammed Marashi, Intelsat's vice president of innovation for commercial services, said in an interview with Signal magazine.
One such application is airborne intelligence, surveillance, and reconnaissance (AISR) missions. Due to their size and other operational constraints, aircraft on AISR missions often require small satellite terminals. The high effective isotropic radiated power (EIRP) and antenna gain to noise temperature (G/T) performance provided by the Intelsat EpicNG high-throughput satellite platform are well suited for these smaller terminals. The higher G/T provided by Intelsat EpicNG satellites translates into higher transmission rates from existing terminals and/or less terminal EIRP per transmitted Mbps.
Intelsat demonstrated these benefits for Gilat Satellite Networks in support of its partnership with Diamond Aircraft on the DA42 MPP Guardian aircraft designed for homeland security applications. Gilat brought its BlackRay 71 airborne terminal with a mechanically steered six-inch-square flat-panel array to Intelsat's Mountainside Teleport near Hagerstown, Maryland.
Engineers sent data from the small airborne antenna to the Mountainside teleport via the Intelsat 29e satellite at a rate of 3.9 Mbps with an efficiency of 0.26 bits/Hz, occupying only 15.2 MHz of bandwidth. This was twice the data rate and almost three times more efficient than traditional wide-beam satellites.
Throughput improvements have also been demonstrated on Class III UAVs, which are used for tactical ISR. In the past, the small antennas on these devices limited the amount of data they could transmit. Intelsat EpicNG combined with flat-panel antennas increases throughput up to five times that of traditional satellites, expanding possible applications for these small UAVs.
Higher-throughput isn't the only benefit achieved from combining small antennas with HTS. Intelsat General's Chris Hudson said in the Signal article: "With these higher-performing satellites, your existing antennas can either transmit much more data, or they can transmit the same amount of data using much less bandwidth. So it's cost-effective and gets even more cost-effective."
Together, small antennas and HTS create a win-win for government customers as they consider new applications that require smaller antennas and higher throughput to accomplish the mission.
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Kymeta demonstrates hybrid data backhaul on cellular and satellite networks
Redmond WA (SPX) Oct 31, 2018
In September 2018, Kymeta-the communications company making good on the promise of global, mobile connectivity-conducted a series of field trials with United States federal agents to successfully demonstrate the benefits and feasibility of reliable, seamless communications along the southern border of New Mexico. Along with partner CopaSAT, and trial partners Cradlepoint, Inc. and TrellisWare Technologies, Kymeta demonstrated the reliability of its dynamic network capabilities that leveraged both cellul ... read more
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