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Marine Electronics - Model 11001 -Multi-Return Altimeter for Oceanographic Sonar Data Capture
The Multi-Return Altimeter 11001 from Marine Electronics is engineered to meet the demanding sonar data acquisition needs of oceanographic and scientific research. Unlike conventional 'first-return' altimeters, this model digitizes receiver output at high speed into a FIFO memory. This digital processing is facilitated by an onboard RISC microcontroller, allowing precise range calculations to the seabed. The device is set up via an RS232 connection to a PC, with parameters stored in FLASH memory, ensuring no power is needed post-configuration. Outputs include both analog and digital, with the analog output managed by a 12-bit converter adjustable for 5v or 10v full-scale. The device also supports high-resolution digital data output through RS232 and RS485. It operates with programmable start and stop ranges for true zoom capabilities and can process up to 4095 samples at a 1-second sampling rate. The Altimeter's comprehensive functionality extends to real-time imaging and seabed detection using advanced DSP techniques.
The Marine Electronics model 11001 Multi-Return Altimeter fulfills many of the sonar data capture requirements of the oceanographic and scientific communities.
This unit differs from most Altimeters of the "first-return" type by digitising the receiver output at high speed into a FIFO memory. The range to the sea-bed is then calculated in the digital domain by the mathematical processing algorithm programmed into the internal RISC microcontroller.
The sampling parameters of the model 11001 are set-up prior to the unit being deployed by linking the unit to a P.C. via an RS232 cable. The parameters are stored internally in the microcontrollers FLASH memory without any power required.
The Altimeter may be interfaced to other equipment using either its analogue or digital outputs. The analogue output is generated from a 12-bit digital to analogue converter and may be software selected for either 5v or 10v full-scale. The digital data to 1mm resolution is available from both RS232 and RS485 outputs.
Whilst cable connected to a P.C. the Altimeter can uplink the raw FIFO data in the same manner as an imaging sonar as shown in the inset pictures.
- Very high precision
- See through suspended sediments
- Programmable start and stop ranges give "True Zoom" capability
- 1sec sample rate
- Up to 4095 samples
- RS232, RS485 and analogue data output
- Sea-bed detection using digital signal processing
- "Windows" software for programming and real-time imaging