Ground Verification of In-Orbit Lunar Relay Communication Satellite

2019 ◽  
pp. 461-469
Author(s):  
Wenma Jin
Keyword(s):  
Communication Satellite ◽  
Relay Communication

scholarly journals Technical characteristics of the relay communication satellite “Queqiao” for Chang’e-4 lunar farside exploration mission

2019 ◽  
Vol 49 (2) ◽  
pp. 138-146 ◽  
Author(s):  
LiHua ZHANG ◽  
Liang XIONG ◽  
Ji SUN ◽  
Shan GAO ◽  
XiaoLei WANG ◽  
...  
Keyword(s):  
Communication Satellite ◽  
Lunar Farside ◽  
Relay Communication ◽  
Exploration Mission

scholarly journals Development and Prospect of Chinese Lunar Relay Communication Satellite

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Lihua Zhang
Keyword(s):  
Libration Point ◽  
Satellite System ◽  
Polar Regions ◽  
South Pole ◽  
Soft Landing ◽  
Communication Support ◽  
Communication Satellite ◽  
Relay Communication ◽  
Exploration Mission ◽  
Operation Status

Relay communication satellites play a very important role on the lunar far side and pole areas exploration missions. Queqiao relay communication satellite was developed to provide relay communication support for the lander and the rover of Chang’e-4 mission landing on the far side of the Moon. From entering into the halo mission orbit around Earth-Moon libration point 2 on June 14, 2018, it has operated on the orbit more than thirty months. It worked very well and provided reliable, continuous relay communication support for the lander and the rover to accomplish the goals of Chang’e-4 lunar far side soft landing and patrol exploration mission. Exploration of the lunar south polar regions is of high scientific interest. A new relay communication satellite for Chinese south pole exploration mission is also under study. The system design and on-orbit operation status of Queqiao relay communication satellite were summarized in this paper. The system concept of the relay communication satellite for lunar south pole exploration missions is proposed. Finally, the future development and prospect of the lunar relay communication satellite system are given.

An analysis of the outlook for widening functional capabilities of the Ukrainian geostationary communication satellite

2012 ◽  
Vol 18 (1(74)) ◽  
pp. 5-12
Author(s):  
A.V. Degtyarev ◽  
◽  
A.L. Makarov ◽  
S.A. Matvienko ◽  
A.V. Prokopov ◽  
...  
Keyword(s):  
Communication Satellite ◽  
Functional Capabilities

High-precision carrier phase timing method with single communication satellite and the test campaign

GPS Solutions ◽  
2021 ◽  
Vol 25 (2) ◽  
Author(s):  
Yang Zhang ◽  
Lingling Xu ◽  
Yu Su ◽  
Wenfang Jing ◽  
Xiaochun Lu
Keyword(s):  
High Precision ◽  
Carrier Phase ◽  
Communication Satellite

Intercepting a Stealthy Network

2021 ◽  
Vol 17 (2) ◽  
pp. 1-39
Author(s):  
Mai Ben Adar Bessos ◽  
Amir Herzberg
Keyword(s):  
Mobile Devices ◽  
Short Range ◽  
Low Energy ◽  
Expected Number ◽  
Relay Communication

We investigate an understudied threat: networks of stealthy routers (S-Routers) , relaying messages to a hidden destination . The S-Routers relay communication along a path of multiple short-range, low-energy hops, to avoid remote localization by triangulation. Mobile devices called Interceptors can detect communication by an S-Router, but only when the Interceptor is next to the transmitting S-Router. We examine algorithms for a set of mobile Interceptors to find the destination of the communication relayed by the S-Routers. The algorithms are compared according to the number of communicating rounds before the destination is found, i.e., rounds in which data is transmitted from the source to the destination . We evaluate the algorithms analytically and using simulations, including against a parametric, optimized strategy for the S-Routers. Our main result is an Interceptors algorithm that bounds the expected number of communicating rounds by a term quasilinear in the number of S-Routers. For the case where S-Routers transmit at every round (“continuously”), we present an algorithm that improves this bound.

Investigation of multipactor breakdown in communication satellite microwave co-axial systems

Pramana ◽  
2005 ◽  
Vol 64 (1) ◽  
pp. 95-110 ◽  
Author(s):  
S. K. Nagesh ◽  
D. Revannasiddiah ◽  
S. V. K. Shastry
Keyword(s):  
Communication Satellite ◽  
Satellite Microwave
Sign in / Sign up

Export Citation Format

Share Document