TW5398 Smart GNSS Antenna; High Precision Full Band; u-blox ZED-X20P 

 
The TW5398 is a multi-band (L1/L2/L5/L6), multi-constellation integrated GNSS receiver/antenna with RTK, PointPerfect®-Flex (PPPRTK) augmentation. The TW5398 is capable of providing sub 1.2 meter accuracy stand-alone, sub 6 cm accuracy with PPP-RTK and sub 1 cm with RTK corrections (service or localized). TW5398 also authenticates Galileo OSNMA anti-spoofing messages. TW5398 can be configured to act as a base or rover for RTK operation.

Full band Accutenna®: Interference Resilience via XF®
The incorporated GNSS antenna technology is based on the Calian TW3990XF full band Accutenna® antenna.  Calian’s eXtended Filtering  mitigates out-of-band signal interference (LTE, WIFI, BlueTooth, Ligado) by employing multi-stage precipitous filtering, offering > 60 dB protection. The stacked, precision tuned, dual-feed ceramic patch increases multi-path resiliency by attenuating first order reflections.  The Accutenna patch has linear phase response and tight phasecenter variation for better accuracy and excellent axial ratio.

Integrated u-blox ZED-X20P Receiver: Plug & Play
TW5398 integrates u-blox’s latest generation full-band ZED-X20P GNSS receiver.  TW5398 supports GPS, BeiDou, Galileo satellites plus SBAS, NavIC and QZSS (configurable) across L1/L2/L5/L6 including L-Band.  Integrated RTK support attains sub 1 cm precision with fast convergence times and high dynamic update rates (to 25 Hz).  

Integrating the GNSS receiver on the TW5398 with a short, deterministic signal path mitigates RF interference that can be induced between the antenna and the receiver, both from the external environment as well as high speed busses and other noise sources collocated in a host application.  The ZED-X20P digital interface is presented to host systems via RS-232 or RS-422, allowing long cable lengths resistant to noise; alleviating design constaints and promoting plug and play, future-proof designs.  Upgrade PNT sub-system capabilities by plugging in the next generation Smart GNSS antenna solution.

GNSS Over The Air signal integrity & monitoring
TW5398 includes jamming/interference and spoofing detection and monitoring.  The device may be configured to generate event messages to alert the host system. In addition the TW5398 may be configured to support Galileo Open Service Navigation Message Authentication (OSNMA) offering enhanced detection of complex spoofing and delayed attacks, also known as meaconing or record-and-replay. 

Features: