Since 2004, Pericle has developed and delivered specialized radio receivers and satellite transponders for the U.S. Government. Many of our receivers have been deployed on high altitude balloons in the near space environment (> 80,000’) and are used to geolocate uncooperative ground emitters. Our newest generation of receivers can collect signals up to 10 MHz wide and use powerful Field Programmable Gate Arrays (FPGAs) to sample and process signals from 138 MHz to 2.5 GHz. Precision timing and frequency sources are used to support both TDOA and FDOA geolocation algorithms. Sub-band tuning, signal detection and relay to the ground are all functions performed by the receiver system. For accurate geolocation, a constellation of four balloon receivers is flown in a “box” formation for optimal collection geometry.
In addition to near space receivers, Pericle also invented a passive bistatic radar exploiting Sirius and XM Satellite transmitters in the 2.3 GHz band. This bistatic radar, called Talon LOTUS, was sponsored by the U.S. Air Force. Bistatic geometries can be favorable for illuminating the broadside or rear of cruise missiles and other stealthy targets, thereby seeing a larger radar cross section and creating a greater probability of detection. Because the radar is passive, it can be made lightweight, stealthy and low cost.
In 2008, Pericle was asked to build the Communications Element (transponder) for the U.S. Army’s SMDC-ONE CubeSat. This nanosatellite was launched on the first Space-X Falcon 9 launch in December of 2010 and was used successfully by the Army as a UHF data relay until it de-orbited as predicted in February, 2011. The small satellite program at SMDC continues and Pericle provided successively more advanced payloads for CubeSats launched in September 2012 and December 2013. Our latest Communications Element is a software-defined radio capable of receiving and transmitting numerous MIL-STD 188-181B waveforms.