The satellite formation flying system is a collaborative system where multiple satellites cooperate in a formation to perform consensus mission in space LEO (Low-Earth-Orbit) through librations points. In recent years, this kind of formation flying systems are getting attention because of reduced cost of mission, failures and recovery and flexibility. If one big spacecraft is at a mission and i...

During the last few decades, battery Depth-of-Discharge (DoD) problem has always been a challenging and limiting factor on satellite-mission duration. This paper, from a system engineering point of view, comprehensively describes the power-hungry phases of a typical Low-Earth Orbit (LEO) satellite mission. Theses phases, each by itself or in any combination(s), may lead to high DoD levels (main...

Global Navigation Satellite Systems (GNSSs) such as GPS, GLONASS, and the future Galileo and BeiDou, have demonstrated to be a valid and efficient system for various space applications in Low Earth Orbit (LEO), such as spacecraft orbit and attitude determination, rendezvous and formation flight of two or more spacecrafts, and timing synchronization. A GNSS presents a number of significant advan...

The space-air-ground-sea integrated network (SAGSIN) plays an important role in offering global coverage. To improve the efficient utilization of spectral and hardware resources SAGSIN, sensing communications (ISAC) has drawn extensive attention. Most existing ISAC works focus on terrestrial networks cannot be straightforwardly applied satellite systems due to significantly different electromag...

Cloud cover is an important factor limiting the earth observation efficiency of optical imaging satellites. Existing solutions include avoiding cloudy time windows by onboard cloud detectors and ground monitors, which are difficult to improve satellite in time. In order solve problem, firstly, a Geostationary Earth Orbit (GEO) Low (LEO) satellites cooperation scheme using information provided G...

Abstract This paper, considers the channel estimation problem of uplink low Earth orbit (LEO) satellite orthogonal frequency division multiplexing (OFDM) system. By exploiting structured sparsity in delay‐Doppler‐angle domain, is formulated as a block‐sparse signal recovery problem. The variance state propagation (VSP) framework extended to solve such Considering that delay, Doppler shift, and ...

A number of satellite communication systems have been proposed using geosynchronous (GEO) satellites, as well as low earth orbit (LEO) constellations operating in the Ka-band and above. At these frequencies satellite networks are able to provide broadband services requiring wider bandwidth than the current services at C or Ku-band. As a consequence, some of the new services gaining momentum inc...

The Low Earth Orbit (LEO) satellite networks require a reliable handover re-routing protocol that is critical for connections with multihop intersatellite links (ISLs). In this paper, we introduce a footprint handover re-route protocol (FHRP) that maintains the optimality of the initial route without performing a routing algorithm after satellite handovers. Furthermore, the FHRP handles the int...

With the rise of a new generation low Earth orbit (LEO) satellite constellations and advancement 6G network, satellite–terrestrial integrated Internet Things (IoT) in future will achieve global coverage through integration LEO constellation, extend computing to edge network deployment services constellation so as meet demand mass connection latency data processing. The be an cloud combining com...