NovAtel releases 2 triple-frequency marine GNSS antennas

NovAtel Inc. has introduced the GPS-713-GGG-N and GPS-713-GGGL-N ATEX-qualified triple-frequency GNSS antennas with an Inmarsat rejection filter.

Based on the company’s pinwheel technology, the antennas offer multi-constellation reception of L1, L2 and L5 GPS; L1, L2 and L3 GLONASS; B1 and B2 BeiDou; as well as E1 and E5 a/b Galileo frequencies.

The GPS-713-GGGL-N also supports L-Band from 1525 to 1560 megahertz. The same antenna can be used for GPS-only, dual or triple constellation applications, resulting in increased flexibility and reduced equipment costs, the company said in a news release.

The phase center of the antennas remain constant as the azimuth and elevation angle of the satellites change. Signal reception is unaffected by the rotation of the antenna or satellite elevation, according to NovAtel. With the phase center in the same location for the GNSS signals, and with minimal phase center variation between antennas, the antenna is suitable for baselines of any length.

The rugged antenna is enclosed in a durable, waterproof housing and meets MIL-STD-810G for vibration, corrosive environment and salt fog, NovAtel says. The GPS-713-GGG-N and GPS-713-GGGL-N are similar in form factor to our other high performance GPS-700 series antennas, and bth antennas meet IEC60945 specifications.

The two antennas deliver choke-ring level antenna performance, but without the size and weight, NovAtel said. Both antennas provide enhanced Inmarsat interference rejection, which allows tracking of GNSS signals in the presence of high-powered Inmarsat transmitters that are typically found on marine vessels.