Nistorescu Sorin
Active Member
There are things that deserve to be shown about Javad receivers.
Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis (MADOCA) is the software developed
by Japan Aerospace Exploration Agency (JAXA) for high precision estimating for the orbits and clocks
of currently available GNSS satellites using a multi-GNSS monitoring network stations located around
the world. MADOCA-LEX provides the satellite orbit and clock correction data of multi-GNSS using a
state-space representation (SSR) format for real-time PPP.
(https://ssl.tksc.jaxa.jp/madoca/public/public_index_en.html)
Being the only one on the market that can track and decode the L-band Experiment (LEX) signal
messages, Javad DETA-3 receiver, underlies in many configurations using this augmentation signal at
the 1278.75-MHz band (same frequency as that of Galileo E6) broadcasted from QZSS:
- techniques developed to decode the LEX messages without the use of an LEX signal tracking loop for
estimating the code phase and the Doppler frequency of the LEX signal, but with the aid of the
conventional L1CA signal, broadcasted simultaneously from the QZSS (picture 1);
- outdoor localization for a mobile robot using precise point positioning (PPP) based on the
Quasi-Zenith Satellite System (QZSS) L-band Experiment (LEX) signal (picture 2);
- buoy observation systems to provide accurate and necessary information for tsunami evacuation more
quickly and also crustal deformation under strong sea current (picture 3);
Don't know why, but somehow I feel a sense of pride..
Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis (MADOCA) is the software developed
by Japan Aerospace Exploration Agency (JAXA) for high precision estimating for the orbits and clocks
of currently available GNSS satellites using a multi-GNSS monitoring network stations located around
the world. MADOCA-LEX provides the satellite orbit and clock correction data of multi-GNSS using a
state-space representation (SSR) format for real-time PPP.
(https://ssl.tksc.jaxa.jp/madoca/public/public_index_en.html)
Being the only one on the market that can track and decode the L-band Experiment (LEX) signal
messages, Javad DETA-3 receiver, underlies in many configurations using this augmentation signal at
the 1278.75-MHz band (same frequency as that of Galileo E6) broadcasted from QZSS:
- techniques developed to decode the LEX messages without the use of an LEX signal tracking loop for
estimating the code phase and the Doppler frequency of the LEX signal, but with the aid of the
conventional L1CA signal, broadcasted simultaneously from the QZSS (picture 1);
- outdoor localization for a mobile robot using precise point positioning (PPP) based on the
Quasi-Zenith Satellite System (QZSS) L-band Experiment (LEX) signal (picture 2);
- buoy observation systems to provide accurate and necessary information for tsunami evacuation more
quickly and also crustal deformation under strong sea current (picture 3);
Don't know why, but somehow I feel a sense of pride..