Autonomous navigation for high altitude satellites

Mohanty, Nirode

doi:10.1016/0020-0255(83)90003-8

Cited by 3 publications

(1 citation statement)

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“…Direct application of the EKF to angles-only navigation could lead to cases of ill-conditioning. This can be alleviated using angles-only measurement equations in spherical coordinates [19]. This way, the measurement equations are linear, leading to better filter performance, and convergence in all cases analyzed in the paper.…”

Section: B Fuel-observability Optimal Guidancementioning

confidence: 99%

Bearings-Only Guidance in Cis-Lunar Rendezvous

D’Onofrio

Bucchioni

Innocenti

2021

Journal of Guidance, Control, and Dynamics

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In recent years international space agencies, and commercial companies have started programming a permanent return to the Moon and future manned missions to Mars. A general consensus for the return to the Moon is the use of a permanent space station in lunar orbit, currently denoted as Lunar Orbital Platform-Gateway (LOP-G), which will serve as a short-term habitation module, science laboratory, and transfer area for rovers and Moon landers.The Human-Enhanced Robotic Architecture and Capability for Lunar Exploration and Science program HERACLES[1], provided a multi-agency baseline study for a lander, whose aim is to collect Moon samples and return them to the Earth using NASA Orion spacecraft, leveraging the LOP-G as a staging point. This space infrastructure will follow a particular type of orbit that has been widely studied in orbital mechanics since the 1960s, but has never been used by now for a real manned space mission: a Near Rectilinear Halo Orbit (NRHO).Such orbits offer long-term stability, with low propellant requirements for orbital station-keeping, by exploiting a balance point in the gravitational field of Earth and Moon [2]. Indeed, the gravitational interaction between our planet and its natural satellite makes possible several highly non-Keplerian orbits, among which the NRHO was selected because of its high eccentricity and orientation, which ensure continuous contact with Earth.Rendezvous and proximity operations with the Gateway will require the development of suitable guidance, navigation, and control (GNC) algorithms, which must take into account the complex dynamic environment. In this work, in particular, the chaser vehicle is assumed to be able to measure relative angles to the target only, which is passive in its NRHO. One of the main reasons for using angular measurements only for rendezvous is the advantage in terms of required power, weight and costs that optical navigation systems can provide [3]. In addition, radio-type relative navigation could not be feasible if the target is uncooperative.The Autonomous Vision Approach Navigation and Target Identification (AVANTI) experiment successfully

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Section: B Fuel-observability Optimal Guidancementioning

confidence: 99%