NASA’s Crustal Dynamics Data Information System (CDDIS) has real-time streaming software (Networked Transport of RTCM via Internet Protocol, or NTRIP) for receipt and transmission of real-time Global Navigation Satellite System (GNSS) data and product streams in support of the IGS Real Time Service. The available product streams consist of GNSS orbit and clock corrections, which enable various applications such as precise point positioning (PPP).

The intention of the CDDIS NTRIP caster is to disseminate Broadcast Corrections for GNSS satellite orbits and clocks in real time in RTCMv3 format. Details about GNSS product streams are available through the caster's Source table. Information on connecting to the CDDIS Caster, streams that we carry, and client configuration is available.

Disclaimer

CDDIS's real-time data caster is provided freely to all users. The IGS RTS and CDDIS make no assurances, implied or otherwise, for the accuracy or availability of the IGS Real Time Service. The service can have outages and degradations in accuracy and these events can render the service unsuitable for any use. The subscriber shall indemnify, defend, and hold CDDIS and its affiliates harmless from any loss or damage resulting from any claim by any person relating to the data services provided through the service. The user will be required to acknowledge these terms of service when registering for the service.

System Access

All of the product streams on this NTRIP caster are protected. Authorization is a two step process:

1. Register for an Earthdata Login account

2. Complete the CDDIS registration form.

System Status

Detailed information on system status, including current stream status and latencies (current and past 24 hours) are available.