Abstract Space-based research can provide a major leap forward in the study of key open
questions in the fundamental physics domain. They include the validity of Einstein's …

The present paper discusses the basics of retroreflector theory and the manner in which they
are combined in arrays to service the laser tracking of artificial satellites and the Moon. We …

This paper presents a solution for autonomous orbit determination and time synchronization
of spacecraft in Halo orbits around Lagrange points using inter-satellite links. Lagrange …

TianQin project is a space gravitational wave detection project initiated by Sun Yat-sen
University. It has high requirements for detectors' orbit accuracy in the stages of orbit entry …

This paper is a novel application of the new effect of gravitational time advancement or
negative time delay, first predicted for static black holes (spin\(a= 0\)), that can be regarded …

We address three major questions in astronomy, namely the detection of biosignatures on
habitable exoplanets, the geophysics of exoplanets and cosmology. To achieve this goal …

The internal roadmap for deep space exploration proposed by the International Space
Exploration Coordination Group (ISECG) clearly identifies the Moon as the first step towards …

Five retroreflector arrays currently on the Moon reflect short laser pulses back to Earth,
allowing range to be measured. Each array has multiple small corner cubes. Due to variable …

A laser retroreflector array (LRA) with multiple retroreflectors is used to directionally reflect
an incident laser beam and aims to enhance the received signal strength into laser ranging …

Abstract The Lunar Laser Ranging Retro-reflectors (LRR) allow for the precise measurement
of the travel time of laser pulses from the Earth to the lunar surface and back. Dust …