ESA GNC Conference Papers Repository

BOLERO is a navigation library which has been developed in CNES for more than 20 years. It has been embedded in space GPS receivers and has already flown in many satellite missions. This paper presents the recent and current development of the library: the first evolution, currently under integration in a space receiver, concerns the possibility to process together measurements from any GNSS constellation. The second evolution, under development, allows the real time estimation of several satellites flying in formation in the same navigator, giving the possibility to monitor the relative evolution of the formation. The paper explains the interest of these new functionalities, and present their validation tests and performances.