Overview

This article provides guidance how to configure GNSS receiver to operate with Skylark Dx (DGNSS) corrections.


To operate with Skylark Dx the receiver needs to support RTCM v3.2 MSM1 messages.


Look up your receiver to check its compatibility with Skylark: Receiver Compatibility Checker


Receiver Internet Access

The Skylark Dx corrections are distributed over the Internet using NTRIP protocol. A reliable Internet access is required for good navigation performance. A quick guide to establishing an Internet connection to Swift Navigation GNSS receivers can be found in Cell Modems and Network Routers article.


Receiver Configuration

The GNSS receiver needs NTRIP Client software to receive corrections from Skylark Dx. Additionally, the NTRIP Client needs to send NMEA GGA message with receiver's approximate position to Skylark Dx. 


The following NTRIP Client parameters need to be configured: address, port, mountpoint, username, password and GGA message interval.


Address

The address depends on the region and GNSS bands:

  • ap.l1l2.skylark.swiftnav.com (Asia/Pacific , L1/L2)
  • eu.l1l2.skylark.swiftnav.com (Europe, L1/L2)
  • na.l1l2.skylark.swiftnav.com (North America, L1/L2)
  • ap.l1l5.skylark.swiftnav.com (Asia/Pacific , L1/L5)
  • eu.l1l5.skylark.swiftnav.com (Europe, L1/L5)
  • na.l1l5.skylark.swiftnav.com (North America, L1/L5)
  • ap.all-freq.skylark.swiftnav.com (Asia/Pacific , L1/L2/L5/L6)
  • eu.all-freq .skylark.swiftnav.com (Europe, L1/L2/L5/L6 )
  • na.all-freq .skylark.swiftnav.com (North America, L1/L2/L5/L6 )

Port

  • 2101 for standard connection
  • 2102 for TLS encrypted data stream
  • 2103 for mTLS encrypted data stream


Mountpoint

  • DX-MSM1


Username/Password

  • Enter the <username> and <password> as received in the Skylark account activation email. If you don’t have credentials, please create account on Skylark Portal or contact Swift sales team (sales@swiftnav.com) to sign-up.


GGA Interval

  • Set GGA output interval between 1 to 30 seconds (10 s is recommended).

 


Notes: 

  1. Skylark Dx uses ITRF2020 reference frame, current epoch.
  2. Skylark Dx sends the following RTCM messages:

  1006 (Antenna reference point with height)

  1008 (Antenna descriptor and serial number)

  1019 (GPS satellite ephemeris data)

  1020 (GLONASS satellite ephemeris data)

  1029 (TEXT)

  1033 (Receiver and antenna descriptors)

  1042 (BeiDou satellite ephemeris data)

  1046 (Galileo satellite ephemeris data)

  1071 (MSM1 GPS pseudoranges)

  1091 (MSM1 GAL pseudoranges)

  1121 (MSM1 BDS pseudoranges)



Related Articles


Skylark FAQ


NTRIP Client Configuration for Skylark Corrections


Cell Modems and Network Routers