Satellite Navigation - an overview | ScienceDirect Topics
Feb 3, 2007 · Satellite navigation system is a system of artificial satellites capable of providing geospecific positioning everywhere in the world. With the help of this system, small electronic receivers calculate their position, including latitude, longitude, and height from the mean sea level with utmost precision.
Satellite navigation signal quality monitoring algorithm based on …
Jun 25, 2024 · 2.3.4. Satellite signal quality classification algorithm for DBO-SVM. The study utilizes the DBO-SVM algorithm to combine satellite navigation signal quality monitoring results in the correlation, modulation, and frequency domains. The flow of …
Autonomous navigation for deep space small satellites: Scientific …
Apr 1, 2022 · The Linked, Autonomous, Interplanetary Satellite Orbit Navigation (LiAISON) method [110] is based on inter-satellite radiometric measurements to estimate spacecraft absolute states when at least one of the orbits has a unique size, shape, and orientation. This can be found in several deep space cases such as around asteroids or at libration points.
Advances in intelligent and autonomous navigation systems for …
May 1, 2020 · The Global Navigation Satellite System (GNSS) is typically the sole source of absolute positioning information in most sUAS architectures, owing primarily to the proliferation of small, low-cost receivers in the market, the addition of new satellites to existing constellations and the emergence of several new constellations.
Space weather impact on radio communication and navigation
Jan 26, 2024 · In addition, solar radio bursts can emit noise in a wide range of frequencies affecting radio signals used in many critical infrastructures and services, e.g., global navigation satellite systems (GNSS), communication and radar systems [Sato et al., 2019b, Sato et al., 2019a]. Other more regional ionospheric phenomena that have an impact on ...
Autonomous satellite navigation using starlight refraction angle ...
May 1, 2013 · Autonomous satellite navigation is the ability to determine satellite position and velocity in real time without the assistance of external support (Collins and Conger, 1994). On-board autonomous navigation can provide a significant reduction in ground operating costs and great improvement in satellite survivability (Fesq et al., 1996).
Radio Navigation - an overview | ScienceDirect Topics
May 1, 2000 · Satellite navigation systems provide the most precise and convenient solution. Satellite navigation is a satellite application system that uses a satellite platform to carry a high-precision atomic clock. It employs radio navigation signals to serve users for navigation, positioning, and time transfer.
Satellite navigation by stellar refraction - ScienceDirect
Oct 1, 1988 · An autonomous attitude and navigation system is described in this paper. It performs the satellite attitude estimation and the navigation with the same star sensors. The use of only natural resources to update the navigation filter provides a total autonomy to this system. The stellar refraction measurement principle is described and the model ...
Evaluation methods of BDS-3 ground-segment defensive …
May 30, 2024 · To evaluate this index, taking different single satellite navigation systems and compatible satellite navigation integrated systems as examples, we selected the weekly observation data measured by global satellite navigation systems at seven monitoring stations (2019, 2039, 2042, 2045, 2043, 2049, and 2053) in the study area. Then, according to Eq.
Distributed satellite autonomous navigation using X-ray pulsars
Mar 15, 2023 · The premise of this distributed X-ray pulsar-based navigation (DXNAV) method is that a single satellite can obtain sufficient pulsar photon time-of-arrival (TOA) information and synthesize pulse phase with high precision. As the pulsar signal is very weak, when limited by the resources of a single satellite platform and the scale of the ...