Creation of a Simulation Model of Spacecrafts’ Navigation Referencing to the Digital Map of the Moon

Abstract

Currently, at NASA significant attention is paid to the development of an initiative on simulating and studying cyber-physical systems (CPS) (Cyber-Physical Systems Modeling and Analysis (CPSMA) Initiative, https://www.nasa.gov/centers/ames/cct/office/studies/cyber-physical_systems.html). CPS are a new class of physical systems describing the complex models of the behavior of spacecrafts equipped with high-performance software complexes of control and navigation (DRAFT Modeling, Simulation, Information Technology & Processing Roadmap Technology Area 11, https://www.nasa.gov/pdf/501321main_TA11-MSITP-DRAFT-Nov2010-A1.pdf). CPS could therefore be characterized as both hybrid systems combining software and hardware and mechatronic complexes containing electronic and mechanic components. In particular, when implementing space missions, CPS include systems for transforming coordinates and algorithms of spatial navigation referencing that have competitive advantages in the accuracy of parameters, the stability of the interaction between various components of CPS, and the possibility of adaptation to the change in dynamic behavior (DRAFT Robotics, Tele-Robotics and Autonomous Systems Roadmap Technology Area 04, https://www.nasa.gov/pdf/501622main_TA04-Robotics-DRAFT-Nov2010-A.pdf). The creation of simulation models for space navigation that could be used further in CPS is an important and relevant task. This chapter considers the development of the navigation simulation model for the lunar space satellite (LSS) referencing the dynamic reference selenocentric system on the basis of coordinates transformation using the regression modeling. The transformation process includes the generation of a photogrammetrically corrected image and referencing the observed lunar objects to the ones included in the digital maps of the Moon. By the coordinate position of an object observed by the LSS and using the software developed by the authors one calculates and compares altimetry parameters of the given point in relation to known selenocentric reference objects.