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Satlantic Free-falling Optical Profiler

Free-falling Optical Profiler

A versatile platform for measuring the apparent optical properties of the ocean and designed to interchange Satlantic's hyperspectral or multispectral optical sensors.

The Free-Falling Optical Profiler, or Profiler II, measures the color of the ocean and how it varies spectrally throughout the euphotic zone. The Profiler II is used by the US, Canada, UK, France, Italy, Australia, Brazil, China, Taiwan, Korea, Japan, India, Germany and Israel to provide calibration and validation data for ocean color satellites. It is used operationally by naval research groups to provide observations of the optical properties of the ocean for anti-submarine warfare, mine countermeasures and laser LIDAR bathymetry. The Profiler II is also the workhorse sensor suite for the global optical oceanography community who investigate basic fundamental biological and physical processes that involve light in the ocean.

The Free-Falling Optical Profiler offers researchers the unique opportunity to use this system as a free fall profiling device or in conjunction with a detachable float for near-surface measurements (HyperTSRB). The Profiler II is designed to interchange Satlantic’s hyperspectral or multispectral optical sensors making this system the most versatile platform for measuring the apparent optical properties of the ocean.

The Profiler II system comes complete with a molded flotation collar that is easily mounted to the profiling frame for real time, near-surface measurements. Upwelling radiance and irradiance measurements can be collected as close as 5 cm from the sea surface.

The optional integration of Wet Labs ECO series sensors offers a new combination for concurrent determination of chlorophyll fluorescence and optical backscattering in either profiling or surface mode.

Applications:

  • Bio-optical algorithm development
  • Satellite calibration and validation
  • Environmental monitoring
  • Data products include water leaving radiance, remote sensing reflectance, energy fluxes, and PAR

Features:

  • Various deployment configurations - Free fall, frame mounted, buoy mode
  • Multiple radiometer options - multi, hyperspectral or combinations
  • Full ancillary suite - tilts, temperature, conductivity, depth, ECO Puck series sensors
  • Easily deployed to avoid ship shadow anomalies
  • Data logging and processing software included

ELECTRICAL CHARACTERISTICS

A/D Conversion16 bit ADC
Sample rate12 Hz max
Data rate57.6 k baud
Telemetry interfaceRS-422 / RS-232
Power requirementsPowered through MDU-200 & 12VDC PS

PHYSICAL CHARACTERISTICS

Length:100 cm
Weight:8.2 kg
Descent rate0.1 - 1.0 m/sec (user adjustable)
Operating temperature2.5 to 40 o C
Depth Rating220 m

ANCILLARY SENSORS

Pressure Sensor

Range30 bar (435 psi) ; 10 bar (145 psi) optional
Accuracy0.01 % FS
Resolution0.002 % FS

External Temperature Sensor

Range-2 to + 32 o C
Accuracy0.005 o C
Precision0.001 o C

Conductivity Sensor

Range0-70 mS/cm
Accuracy0.005 mS/cm
Resolution:0.001 mS/cm

Tilt Sensor

Linear range+/- 45 o
Accuracy:<0.2 o

Optional Sensors

WET Labs ECO pucksFluorescence Backscattering Turbidit

(SAT-THS)

System Electronic

Sample rate>2 Hz
TelemetryRS232 and RS422
Baud rate19200 bps (configurable)
Input voltage9-18 V (18-72 optional)
Power consumption1.7 W (140 mA at 12V)
Temperature range-10 to 50 °C

Performance

Azimuth0 to 360 degrees
Azimuth resolution12 bits (0.08 degrees)
Azimuth accuracy<0.5 degrees, typical (with calibration)
Pitch range-30 degrees to +30 degrees
Roll range-30 degrees to +30 degrees
Tilt resolution12 bits (both axis)
Tilt repeatability<0.05 degrees, typical
Magnetic field+/- 2 Gauss, typical
Magnetic resolution<1 mGauss, typica

Physical Characteristics

Total length30 cm (11.85”)
Diameter:5.7 cm (2.25”)
Weight:0.81 kg (in air)
Material:Acetron
Maximum depth300 m
Connector:Micro 8-pin male

ProSoft is an interactive graphical data processing and extraction application for Satlantic sensors. It is highly configurable with optional batch mode operation and a rich user interface. Supported data products include:

For minimum system requirements, installation instructions, and new features, please refer to the release notes and manual.

Download ProSoft 7.7.16

Released October 26, 2011

Prosoft 7.7.16 provides a number of key improvements including Windows 7 compatibility, corrected backscattering coefficient units, robust handling of corrupt timer data, HyperSAS IR camera integration, interruptable processing, and more. For a detailed list of recent fixes and features, please refer to the release notes.

ProSoft7.7.16_Setup.exe for Microsoft Windows

SatView is a real-time interactive data logging and display application for use with Satlantic radiometers. SatView makes it easy to connect to your Satlantic instruments and view time series, spectral plots, and depth profiles while capturing data for subsequent conversion and post-processing.

SatView features include:

  • Easy set up and configuration management
  • Serial communications direct to instruments
  • Real-time graphical display of incoming data
  • Ancillary sensor integration
  • Custom log file headers
  • Surface pressure tare
  • Support for profiling, in-situ and towing deployments

Download SatView 2.9.5

Released April 11, 2014

SatView 2.9 provides Windows 7 compatibility, improved PAR sensor support, wavelength range settings for spectral views, additional cast card fields for post-processing, support for up to 96 serial ports, GPS data validation and many more. Please refer to the release notes for a detailed list of recent improvements.

SatView-2.9.5-b7-x86.exe for Microsoft Windows

SatCon is a software utility for converting raw binary data, as logged by SatView, into readable ASCII text suitable for import by third party applications such as spreadsheets or databases. Data can be extracted in calibrated physical units or raw binary counts. SatCon can be operated interactively through a user friendly graphical interface, or in batch mode as a background process.

For minimum system requirements, installation instructions, and new features, please refer to the release notes in the SatCon User Manual.

Download SatCon 1.5.5

Released April 28, 2011
SatCon-1.5.5-b2-x86.exe for Microsoft Windows
Product Brochure

Profiler II Brochure

Monday, March 12, 2012
Profiler II-26Jul2010.pdf
Product Manual

SatView 2.9 Manual

Satlantic SatView 2.9 Manual.

Thursday, October 2, 2008
SatView-2.9-Manual.pdf
Product Manual

Profiler II Manual

Tuesday, February 1, 2000
ProfilerII-RevK-Manual.pdf
Product Manual

ProSoft 7.7 Manual

Satlantic ProSoft 7.7 Manual.

Thursday, May 5, 2011
ProSoft-7.7- Manual.pdf
Product Manual

SatCon 1.5 Manual

Satlantic SatCon 1.5 Manual.

Wednesday, March 9, 2011
SatCon-1.5-Manual.pdf

Where do I find the Pressure Tare button in later versions of SatView?

In later SatView Versions, the Pressure Tare button is located under the ancillary view at the "package" level.  To open the ancillary view at the package level: Notice the white section of the SatView main window - this is where your loaded instruments appear. Within this white section, at the very top there is a suitcase icon, with the individual instruments treed out underneath. Right click to bring up a drop down menu, select "View List" and "Ancillary View" to open the package level ancillary window that contains the Pressure Tare button.

What are SIP files?

Files that are delivered with Satlantic and third party equipment to describe the sensors data output and calibration coefficients come in two types. Calibration files or *.cal files and telemetry definition format files or *.tdf files. In some cases, systems are created that network many sensors together and their combined data is provided in one serial output.

The simplest example is a HOCR sensor that generates both light and dark frames. A more complex example is a HPROII profiling system that may contain as many as 5 sensors and 7 individual calibration and tdf files. These files must be used to both collect and process the data.

This can become quite confusing to keep track of all these files so Satlantic developed SIP files. All CAL and TDF files required for a system are zipped using winzip and the extension changed from *.ZIP to *.SIP. The file name includes the system description (usually the network master serial number) and the creation date. This SIP file can then be used in place of individual files to collect and process data.

How do I avoid the effects of the ship's shadow when logging optical data with the MicroPro II?

The free-falling profiler is designed to profile away from a small boat or large ship to avoid any potential shadow effects. The instrument is deployed by hand from the leeward side of the vessel and allowed to descend while the vessel drifts downwind. When the profiler is pulled back up to the surface, the fins cause the instrument to maintain its location and come straight up. Using this method, the optical profiles can be performed at a safe distance from the vessel.How do you avoid the effects of the ship's shadow when logging optical data with the MicroPro II?

How do I avoid the effects of the ship's shadow when logging optical data with the MicroPro II?

The free-falling profiler is designed to profile away from a small boat or large ship to avoid any potential shadow effects. The instrument is deployed by hand from the leeward side of the vessel and allowed to descend while the vessel drifts downwind. When the profiler is pulled back up to the surface, the fins cause the instrument to maintain its location and come straight up. Using this method, the optical profiles can be performed at a safe distance from the vessel.

  • Zibordi, G.; Berthon, J.F.; Melin, F.; & Alimonte, D.D. (2010) Cross-site consistent in situ measurements for satellite ocean color applications: The BiOMaP radiometeric dataset. Remote Sensing of Environment. doi:10.1016/j.rse.2011.04.013 Read Now
  • Cristina, S, Goela, P, Icely, J, Newton, A, Fragoso, B. (2009) Assessment of water-leaving reflectances of oceanic and coastal waters using MERIS satellite products off the southwest coast of Portugal. Journal of Coastal Research, SI 56 (Proceedings of the 10th International Coastal Symposium), 1479 - 1483.
  • Kowalczuk, P, Durako, M.J., Cooper, W.J., Wells, D, Souza, J.J. (2006) Comparison of radiometric quantities measured in water, above water and derived from seaWiFS imagery in the South Atlantic Bight, North Carolina, USA. Continental Shelf Research 26: 2433-53.
  • Tzortziou M., J. Herman, C. Gallegos, P.Neale, A. (2006) Subramaniam, L. Harding, & Z. Ahmad, 2006. Bio-optics of the Chesapeake Bay from measurements and radiative transfer closure. Estuarine Coastal and Shelf Science, 68(2), 348-362
  • Pradhan, Y, Thomaskutty, A.V., Rajawat, A.S., Nayak, S. (2005) Improved regional algorithm to retrieve total suspended particulate matter using IRS-P4 ocean colour monitor data. Journal of Optics A: Pure and Applied Optics 7: 343-49.
  • Pradhan, Y, Mohan, M, Sengupta, D, Nayak, S. (2005) Radiant heating rates and surface biology during the Arabian Sea monsoon. Journal of Geophysics and Engineering 2: 16-22.
  • Bergmann, T, Fahnenstiel, G, Lohrenz, S, Millie, D, Schofield, O. (2004) Impacts of recurrent resuspension event and variable phytoplankton community composition on remote sensing reflectance. Journal of Geophysical Research doi:109: C10S15, DOI: 10.1029/2002JC001575.
  • Hooker, S, Lazin, G, Zibordi, G, McLean, S. (2002) An evaluation of above and in-water methods for determining water-leaving radiance. Journal of Atmospheric and Ocean Technology 19: 486-515.
  • Hooker, S, Lazin, G, Zibordi, G, McLean, S. (2002) An evaluation of above and in-water methods for determining water-leaving radiance. Journal of Atmospheric and Ocean Technology 19: 486-515.

Profiling Hardware (Deck Unit and Cabling) (Optional)

The MDU-300 deck unit serves as both a nominal 48 Volt DC power source for the in-situ FIRe system and as an RS-422 to RS-232 level converter. The MDU-300 provides three connectors for data and power.

Float collar

The removeable flotation collar is easily mounted to the profiler for real time, near-surface measurments. Upwelling radiance and irradiance measurments can be collected as close as 5 cm from the sea surface.