The challenges of discerning what, exactly, they are seeing, is real, as sensors are only built to study known objects.
Sailors assigned to Explosive Ordnance Disposal Group 2 recover a high-altitude surveillance balloon off the coast of Myrtle Beach, South Carolina.So far in February, the United States has shot down four objects in territorial skies. The first of these was a balloon, traced to the People’s Republic of China, which entered US airspace over Montana on February 1 and was shot down off the coast of South Carolina February 4.
That the objects remain unknown but terrestrial in origin fits into the broader pattern of Unidentified Flying Objects and, more recently, Unidentified Aerial Phenomena. Pilots and sensors have certainly been observing mysterious items in flight, but the challenges of discerning what, exactly, they are seeing, is real, as sensors are only built to study known objects.
One way to increase coverage is by expanding the aperture of what sensors flag as worth of alert. This is, at least in part, likely related to the detection of the three other objects identified by the US and Canada and shot down over the US this month. Increasing sensor sensitivity means expanding the scope of what a system, like a radar, is trained to detect. The change will allow it to include other signals that it has been set to filter out as irrelevant previously. Often, there is a good reason for this. In 2015, after an activist flew a gyrocopter onto the east lawn of the US Capitol, Congress held hearings to understand why his small flying machine wasn’t detected.
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