The Northstar GPS Health Monitor adds unparalleled situational awareness and threat detection capabilities to any installation that depends on GPS for position or time. UHU’s patented algorithms validate the GPS satellite constellation using spatial processing techniques that cannot be spoofed. If a spoofer or jammer is detected, an alarm can be sent (via RS232, email, etc.) to alert you of the attack and provide the angle of arrival (line of bearing) to the threat. Multiple Northstar's can be used to geolocate the threat. The Northstar augments existing GPS receivers by validating that the environment is clear. The Northstar is a 19" rackmount 1U chassis.