Chariot is a portable S-Band satellite terminal designed for use with the Mission 22 (M-22) transponder. The Chariot is designed to support the Army's tactical mission by receiving, processing, and disseminating intelligence data obtained from national sources. This system provides a capability for transmission of large imagery files to forward deployed TENCAP elements independent of traditional communications links. These files can be transmitted from in-theater via an AEPDS van or from a fixed CONUS site. While the terminal's primary function is reception of imagery it is also used to transfer other data such as message traffic. The Chariot also has a low rate transmission capability used for acknowledgment and requests. In an Early Entry environment the only communications available to Army TENCAP may be organic radio frequency (RF) systems. The Chariot is envisioned to support both the receipt and dissemination of nationally derived data through
immediate access to sources and satellite relay capabilities.
Chariot ís reduced size and weight enhances deployment with the
most mobile of ground maneuver forces currently supported by Army
TENCAP equipment. Chariot will support the following: (1) acquisition
and distribution of secondary imagery products, (2) acquisition and
distribution of nationally collected information, and (3)
alternate-routing of messages and files.
A design effort to increase transmit power and fix a water intrusion problem, including testing of two modified terminals, began in November 97. Following the acceptance of the design, the remaining Chariots were modified in FY98.
The CHARIOT SATCOM terminal is capable of receiving signals at data rates up to 1024 Kbps from Defense Meterological Support Program and LEO satellites. The terminal can receive signals at data rates up to 128 Kbps from HEO and GEO relay satellites. It is also specified to transmit at 9.6 Kbps, but may be capable of supporting higher data rates. The Chariot is self contained and requires no tools for assembly or operation. Both soft and hard transit cases are included for transporting the terminal, providing packaging within the 84 pound commercial airline baggage limits. The system consists of the following subsystems:
