Inside GNSS
Spectracom has introduced two timing-related products, the GSG 6-Series GPS/GNSS simulator for testing receivers’ timing capabilities and the SecureSync Timing Reference with enhanced Loran (eLoran) backup capability for GNSS.
The company’s off-the-shelf GSG 6 units support supports dual-frequency (L1/L2) GPS receivers and military secure SAASM modules with pseudo P(Y) code as well as the new GPS civil signals, L2C and L5; legacy GNSS L1 (GLONASS, BeiDou, and Galileo) signals and other new GNSS signals: GLONASS L2, Galileo E5, BeiDou B2; and Indian Regional Navigation Satellite System (IRNSS) L5.
A built-in one pulse per second (1-PPS) output, synchronized to the generated satellite data, allows comparison with the 1-pps signal from the timing receiver under test, Spectracom says. The series comes in GSG-6: 32-, 48-, or 64-channel versions capable of simulating, respectively, 2, 3, or 4 frequencies simultaneously. The simulators feature a timing calibration service to characterize the offset within 1 nanosecond — with a 0.35-nanosecond uncertainty, according to the company.
