Specifications

BATS GENERAL INFORMATION
1-1
The Model 4460C has the same features and functions as the 4460B but internally has a new CPU
and IDE interface. These new components allow for faster data processing with reduced stress on
the internal CPU.
1. GENERAL INFORMATION
The EdgeTech Broadband Acoustic Tracking System (BATS) is an Ultra Short BaseLine (USBL) un-
derwater tracking/navigation system. The O EdgeTech BATS consists of a hull mounted Transducer
(Model 4213C-B), that is both a listening Hydrophone and an Interrogator, a Deck Cable (Model
4113C), Transceiver (Model 4460C) and a PC (Customer or EdgeTech Supplied).
For a complete system from EdgeTech the BATS topside electronics are available in a 19-inch rack
type enclosure
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. It consists of three 2U rack modules in a 6U Equipment Case containing the Trans-
ceiver (Model 4460B), the Rack Mount PC (running Windows) (Model 4451A) and a Key-
board/Display (Model 4452A). See Figures 1-1 and 1-2. The Transceiver is also available as a Desk
Top version (a 3.5 inch high chassis, 2U rack height), with a Laptop PC (EdgeTech or Customer
supplied). Another configuration of the BATS is a Portable version (Model 4461A) with a Laptop PC
(EdgeTech or Customer supplied). The Human Machine Interface (HMI) software (installed on the
PC) is called “Trackman”.
Transceiver
The Transceiver, Model 4460C, is the heart of the BATS. It is an integrated, Ultra-Short BaseLine
(USBL) acoustic signal processor designed to operate with up to four targets for a wide range of
subsea navigation and relocation tasks. It is contained in a 2U rack mount chassis and interfaces to
the Hydrophone/Interrogator and also the PC (running Windows software). The Transceiver Module
contains a receiver, digitizer and CPU along with a data acquisition module for external interface to
NMEA and analog sensors. It also contains the transmitter and power supplies. The Transceiver re-
ceives signals from the Transducer’s three element listening array (Hydrophone) and also Transmits
signals to its interrogation element.
The Transceiver interfaces to the EdgeTech USBL Hydrophone Model 4213C-B via its deck cable
Model 4113C. The Transceiver receives the signals from the Transducer and sends the raw data to
the PC for calculation of target position. The target types consist of transponders or responders
(Beacons).
Transducer (Hydrophone/Interrogator)
The Transducer, Model 4213C-B, is 2.875 inches (7.3cm) diameter by 17.53 inches (44.53cm) in
length and is calibrated in the 17 to 30kHz frequency band for the receiver and tuned to 15 to
23kHz for the transmitter. The Model 4213C-B-LF is the same size but is calibrated in the 8 to
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* The 19-inch rack is a standard from EIA 310-D, IEC 60297 and DIN 41494 SC48D. One “Unit” in
a rack is 1.75 inches tall, 2U is 3.50 inches etc. The 19-inches refers to the rack width.