A Global Data
Telemetry and Geo-positioning Services Company
for North America
How will Users
benefit from Argos Downlink?
Argos downlink enables
you to:
Send commands to
your platforms.
The downlink gives users the possibility of sending short messages (up to 128
bits) to their platforms once they are deployed. These messages are called
"downlink messages" and "uplink messages" are those sent by
platforms to the satellites.
Manage
transmissions, increase platform lifetimes
The Argos downlink allows for the Argos operator to send to all platforms system
information such as: satellite constellation (including those without downlink),
orbit parameters, and UTC time. By equipping platforms with software that can
predict the hour and length of the satellite pass, this system information can
be used to enable rendezvous with the satellite(s) and minimize transmission
times. Transmission rates can also be optimized for energy savings.
Send more data
Argos downlink increases the data throughput of your platform by using the
Interactive Data Collection Service. This new data collection service consists
of quality controlling the content of messages received at the satellite (helped
by a checksum). The satellite acknowledges, to the platform, reception of each
message received correctly.
Conserving
compatibility with current transmitters
The Argos two-way instrument, as well as all future two-way instruments, is
completely compatible with transmitters currently in use. In order to benefit
from two-way capabilities, a platform must be equipped with a PMT (Platform
Messaging Transceiver).
How will
Users access the new Argos downlink capabilities?
Users can access Argos
downlink capabilities via the web interface or through the Department of User
Services.
By using the web interface, users can:
create, modify, or
delete downlink commands recognized by the PMTs
define how and when to
send commands to the PMTs
check if messages are
received by the PMTs.
Downlink messages and all
associated transmission modes are called "requests".
All user "requests" are stored at the DMMC (Downlink Message
Management Center) located in Toulouse, France. The DMMC mission is to:
Verify if the messages
are compatible with the system
Manage the downlink
message delivery according to user requests and the system space allocation
Generate parameters
(including downlink messages) and upload them to the satellite
Verify the progress of
requests entered into system and inform users of status
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Welcome to Service Argos, Inc. 