Reson Seabat 8101

Options and Upgrades4.19 Option 057, Upgrade to Transmit Pitch StabilizationThis option allows the SeaBat 8101 system to maintain a vertical transmit beamwhen pitching. An external motion sensor's pitch value is required by the sonarprocessor to implement the correction.Figure 26 B illustrates the maintenance of a vertical transmit beam with up anddown pitch angles of 12°. Pitch correction is limited to ±12°. However, if the pitchangle exceeds this value, the transmit beam's vertical angle will still be corrected,but only to the 12° limit. Figure 26 C shows only a 5° beam displacement aft for atotal downward pitch of 17°. Conversely, an upward pitch of 17° will result in aforward beam displacement of only 5°.ONo Pitch Pitch Up / Dn12 Pitch Down17A B CCC/ L/ L/CFigure 26, Transmit Pitch StabilizationL5 O OThe pitch stabilization function employs a prediction algorithm to compensate forthe motion sensor data transmission time and setup time required in the sonarhead. Typically, pitch values are predicted approximately 60ms in advance.Option 057 requires the installation of a replacement projector and additionalprinted circuit boards in the sonar head. The sonar head must be returned toRESON for this upgrade. If, however, the customer's schedule prohibits such areturn, the upgrade can be accomplished in the field by a RESON engineer. Inaddition, a motion sensor must be connected to Serial Port 3 at the rear of theSonar Processor. See Chapter 6, Paragraph 6.2.1.3 for details of this port.______________________________________________________________________SeaBat 8101 Operator's Manual 4-18 Version 3.02