// ORBITAL LOGISTICS AND PROPULSION TERM
Downlink
Downlink is the process of transmitting data or signals from a satellite or spacecraft in orbit down to a receiving station on Earth.
TECHNICAL DEFINITION
Downlink refers to the transmission path of data, telemetry, or communication signals from an orbiting satellite or spacecraft to a ground station or receiving antenna on Earth, crucial for mission control, data retrieval, and service delivery.
BACKGROUND
The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. It is the largest telescope in space, and is equipped with high-resolution and high-sensitivity instruments, allowing it to view objects too old, distant, or faint for the Hubble Space Telescope. This enables investigations across many fields of astronomy and cosmology, such as observation of the first stars and the formation of the first galaxies, and detailed atmospheric characterization of potentially habitable exoplanets.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Space-to-Ground Transmission
- Data Downlink
- Signal Reception (from space)
USAGE NOTE
Ensuring sufficient downlink capacity is vital for Earth observation satellites that generate large volumes of data.
DEVELOPERS
Organizations developing technology related to Downlink.
Provides AWS Ground Station, a fully managed service that allows satellite operators to downlink data and control satellites using Amazon's global network of ground station antennas, integrating it directly with AWS cloud services.
A leading commercial provider of ground station services, operating a global network of over 260 antennas. They offer data downlink and satellite control services for a wide range of Earth observation and communications satellites.
Operates a global satellite network and provides ground station-as-a-service through its Real-Time Earth (RTE) network, enabling low-latency data downlink for Earth observation, remote sensing, and government missions.
An international network of large antennas and communication facilities, managed by the Jet Propulsion Laboratory (JPL), that supports interplanetary spacecraft missions by downlinking scientific data and telemetry from deep space.
Operates the Starlink satellite constellation, which utilizes a vast global network of gateway ground stations to downlink data from its low-Earth orbit satellites, forming the backbone of its internet service.
A Ground Station as-a-Service (GSaaS) that enables satellite operators to communicate with, control, and downlink data directly into the Microsoft Azure cloud for processing, analysis, and storage.
A Ground Segment as a Service (GSaaS) provider focused on smallsat and constellation operators. They manage a global, distributed network of ground stations to simplify and automate the process of downlinking satellite data.
A major provider of satellite ground segment technology, including modems, gateways, and software for command, control, and telemetry. Their systems are critical for processing the downlinked radio frequency signals into usable data.