Radars have long been used to track targets in the air or at sea but, traditionally, radar isn't known for its ability to track targets on land. Despite its reputation, radar has been used for exactly that purpose as far back as Operation Desert Storm.
Electronics have advanced rapidly since then, however. In the last 25 years, we've gone from clunky desktop computers that ran up to 16 megabytes of RAM and a 250 megabyte hard drive to using laptops that hold 32 gigabytes of RAM and have terabytes of storage space. Today, the cell phone you hold in your hand is arguably more powerful than a top-of-the-line gaming PC of 25 years ago.
The E-8C JSTARS had to be based on the Boeing 707.
Well, that electronics revolution has helped radars, too. Previously, you needed a jumbo jet, like the 707, to carry a radar system around. Modern radars, however, are a lot smaller. One such radar is the APS-134G from Telephonics. According to an official handout, the radar weighs just under 450 pounds!
Despite being lightweight, this radar can do a lot. Among its capabilities is a ground moving target indicator, synthetic aperture radar imaging, wide-area surveillance, coastline mapping, weather mapping, and an aircraft detection and location mode that can simultaneously process over 300 targets!
The HU-25 Guardian used an earlier version of the APS-143.
The small size of this system means that you no longer need a jumbo jet to get a powerful eye in the sky. Among the planes capable of carrying this radar are Beech King Air planes, Bombardier Global business jets, and the CP-140 Aurora maritime patrol aircraft.
In short, this radar will make it very hard for bad guys to hide.