Low-powered incoming GPS signals are allocated 1559-1610 MHz in the L-Band radio spectrum. The neighboring spectrum–from 1525-1559 Mhz–is allocated to other, equally low-powered, incoming satellite signals, such as Sky Terra’s. GPS receivers are open to signals above the blue line shown, but filter out signals below it, and require modification to accept Glonass.
Following extensive reports of GPS interference, LightSquared announced last week that it would vacate its L-Band frequency adjacent to GPS and move to one further away to greatly reduce, but not eliminate, interference with satnav signals.
Northrop Grumman officials during a Paris Air Show briefing reported that the first Block 40 Global Hawk high-altitude UAV for the U.S. Air Force is scheduled to make its first flight this week equipped with the Northrop Grumman/Raytheon radar technology insertion program (RTIP) sensor.
Thales is “five years ahead of anybody in Europe or the U.S.” in active arrays for airborne radars, according to Jean-Nöel Stock, Thales vice-president UAVs and intelligence, and a former program director for Dassault Rafale airborne systems.
Raytheon’s common ground control system (CGCS) is being cast as an economical solution for controlling unmanned aircraft systems from different manufacturers. This is after it started life several years ago as a tactical control system (TCS) for the U.S. Navy.
Raytheon’s Space and Airborne Systems division has upgraded its SeaVue maritime surveillance radar, incorporating a situational awareness package that has been fielded with the U.S. Navy and Customs and Border Protection (CBP) agency and is now available for export.
The market for in-flight connectivity is about to step up a gear as passenger power pushes demand to be able to use personal smart phones, laptops and tablet devices, according to leading provider OnAir.
Development of an active electronically scanned array (AESA) radar for the Eurofighter Typhoon is continuing, although the four European partner nations still have not collectively committed funds. However, at the Paris Air Show later this month they plan to sign a letter of intent (LoI) with Eurofighter that confirms their intention to eventually adopt and pay for the new technology.
Whether for safety, economy or to meet ICAO Flight Operations Quality Assurance (FOQA) standards, helicopter operators are showing increased interest in capturing and analyzing flight data. Spidertracks (Booth No. 4854), based in Palmerstown North, New Zealand, offers a global satellite-based system for fleet operators that tracks equipped aircraft in real time and records movements and flight data for later analysis.
Wireless health and usage monitoring systems (HUMS) are flying in four U.S. military rotorcraft on an experimental basis.