Edgetech USBL BROADBAND ACOUSTIC TRACKING SYSTEM, User Hardware Manual, Page: 36 / 102

SECTION 2: SPECIFICATIONS 2-10
BATS 0018257_REV_A
Mechanical Specifications [ALL BATS]
Mechanical Specifications for all BATS configurations are outline below. See R
ACKMOUNTED
BATS for
unique specifications.
2.5.1 System Accuracy
SYSTEM ACCURACY SPECIFICATION
Transponder/Responder – Absolute Accuracy in Horizontal
Position (over entire hemisphere)
+ or - 0.5% RMS of Slant Range
(Does not include motion)
Repeatability Accuracy + or - 0.25% RMS of Slant Range
Angular Resolution 0.08°
Slant Range Accuracy + or - 0.3 meter RMS
(assuming correct speed of sound)
Slant Range Resolution 0.1 meter
Table 2-4: BATS Specifications System Accuracy
2.5.2 Receive Signal Spec
RECEIVE SIGNAL SPEC
Frequency MF Range; 17-30kHz or LF Range; 8-16kHz
Signal Coding Structure Various CW, Chirp (linear), Chirp (stepped or discrete tones), PSK Phase Shift Keying), M-FSK
(Multiple – Frequency Shift keying), (Hydroid’s REMUS (codes 1-4)
Signal to Noise Ratio
required
Typically >20dB (in 17-30kHz band or 8-16kHz band)
Table 2-5: BATS Receive Signal Spec
2.5.3 Diff Key Input – Responder (4)
DIFF KEY INPUT – RESPONDER (4)
Via rear panel Synchronization connector Accepts single-ended, or differential signal input to opto-coupler
Pulse widths min = 200 micro seconds
Pulse width max = up to the width of the transmit-out burst
Table 2-6: BATS Diff Key Input – Responder (4)
2.5.4 Trigger Out
TRIGGER OUT
Via rear panel
Synchronization connector
Sync for Responder operation; Differential Output (0-5VDC) Either side can be
used as a positive or negative TTL pulse when used with GND.
Table 2-7: BATS Trigger Out