Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Types of Global Positioning System Surveys

Types of Global Positioning System Surveys

GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...

Field Application of Global Positioning System

Field Application of Global Positioning System

The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...

Energy of a Satellite in a Circular Orbit

Energy of a Satellite in a Circular Orbit

Thousands of artificial satellites orbit the Earth every day at various distances from the Earth. Satellites that orbit the Earth below an altitude of 1,600 km are considered to be orbiting in low-Earth orbit (LEO). Research satellites and Earth observation satellites are usually placed in LEO, and mostly orbit the Earth in elliptical orbits. Navigation satellites are placed in medium-Earth orbit (MEO), ranging from 2,000 km to 36,000 km from the surface of the Earth. Meanwhile, communication...

Introduction to Global Positioning System

Introduction to Global Positioning System

The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...

Thematic Layering in GIS

Thematic Layering in GIS

In the past, planning projects such as schools or public facilities required extensive manual effort to gather and compile data. Information such as property boundaries, soil characteristics, road networks, zoning regulations, and flood zones had to be sourced individually from courthouses, utility providers, and registry offices. Assembling these datasets into a coherent format often took several months, delaying project timelines.The introduction of Geographic Information Systems (GIS)...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Genome-Wide Association Study of Body Conformation Traits in Tashi Goats (<i>Capra hircus</i>).

Animals : an open access journal from MDPI·2024

Same author

Effects of returning paddy field to wetland on composition and stability of soil aggregates in the Yellow River Delta.

Ying yong sheng tai xue bao = The journal of applied ecology·2024

Same author

Programmable photoacoustic patterning of microparticles in air.

Nature communications·2024

Same author

Transcription-coupled DNA-protein crosslink repair by CSB and CRL4<sup>CSA</sup>-mediated degradation.

Nature cell biology·2024

Same author

LncRNA XIST modulates miR-328-3p ectopic expression in lung injury induced by tobacco-specific lung carcinogen NNK both in vitro and in vivo.

British journal of pharmacology·2024

Same author

Natural anti-neuroinflammatory inhibitors in vitro and in vivo from Aglaia odorata.

Bioorganic chemistry·2024

Search research articles

Related Experiment Video

Updated: Jul 16, 2026

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Multi-Layer Low Earth Orbit Constellation Capacity Fundamental.

Shaofan Hu¹, Min Sheng¹, Di Zhou¹

¹State Key Laboratory of Integrated Service Networks, Institute of Information Science, Xidian University, Xi'an 710071, China.

Sensors (Basel, Switzerland)

|July 15, 2026

Summary

Multi-layer low Earth orbit constellations (ML-LEOs) enhance satellite network capacity. Optimal configuration involves specific layer counts and inter-satellite links for peak performance.

Keywords:

bottleneck link capacity analysis multi-layer low Earth orbit constellation

Related Experiment Videos

Last Updated: Jul 16, 2026

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Area of Science:

Satellite Network Engineering
Space Systems Analysis
Telecommunications

Background:

Multi-layer low Earth orbit constellations (ML-LEOs) are advancing satellite network systems.
Layered orbital architectures improve system performance.
Key challenges include configuration impact and optimal layer determination.

Purpose of the Study:

Investigate the effect of layer count (L) on ML-LEO capacity.
Determine optimal parameter configurations for ML-LEO performance.
Provide a theoretical framework for ML-LEO design.

Main Methods:

Analysis of inter-layer inter-satellite link (ISL) distribution.
Calculation of flow counts on bottleneck links.
Derivation of closed-form mathematical expressions for capacity.
Extensive simulations for result verification.

Main Results:

ML-LEO capacity scales linearly with the number of layers (L) under specific conditions.
Identified optimal parameters: orbits per layer = satellites per orbit, layers = satellites per orbit / 2.
Optimal inter-layer ISLs derived for enhanced connectivity.

Conclusions:

Multi-layer constellation topology offers significant performance benefits.
Established a theoretical basis for optimizing ML-LEO parameters.
Findings guide the design of efficient and high-capacity satellite networks.