GNSS user equipment improvement
GNSS receivers are widely used in terrestrial, marine, airbone, and space applications. At the same time, the existing GNSS user equipment needs considerable improvement due to the following factors: launch of new and modernization of the existing GNSS; rapid growth of the number of GNSS receivers; changes in the requirements to mass market GNSS equipment as well as development of mid-precision navigation segment. These factores determine main research areas to improve GNSS user equipment. They are, firstly, development of methods to design GNSS receivers for new and modernized satellite navigation systems; and, secondly, development of automated testing methods for mass market GNSS receivers.
In this connection, the research areas of the International Research Laboratory Integrated Navigation and Attitude Reference Systems are the following:
Development of signal models of new and modernized GNSS as well as development of algorithms and methods for signal processing that take into consideration mass market requirements, such as power consumption and cost;
Prototyping of GNSS equipment capable of receiving signals from new and modernized GNSS, including GLONASS CDMA signals;
Development of the theoretical basis for automated GNSS receiver testing;
Development of a test bench for automated functional regression testing of GNSS receivers and testing of commercial GNSS equipment.
The above research involves various tasks of signal processing, Kalman filtering, reliability theory, and diagnostics theory, which are solved with the use of test benches and prototypes (Fig. 1-3). The obtained solutions will be applied to the development of commercially successful navigation systems.
Fig. 1. Test bench for automated GNSS receiver testing.
Fig. 2. Development of a GNSS receiver prototype.
Fig. 3. Prototype of a GLONASS CDMA receiver.
(Fig. 1-3 are provided by doctor of technical sciences Mikhailov N.)