CHIRP Sidescan Sonar System

Falmouth Scientific, Inc. (FSI) has reached into its well of experience and knowledge to develop the HMS-624 digital CHIRP sidescan sonar system offering dual simultaneous 100/400KHz frequency operation. The HMS-624 provides imaging capabilities for deep and shallow water applications. The twofish electronics incorporate FSI’s CHIRPceiver 24-bit CHIRP signal processing, which results in very-high-resolution sidescan data at towing depths of up to 2,000 metres. The Topside Power/Data Multiplexer Interface is packaged in a standard 2U 19” rack mount enclosure and provides a 4Mb/s DSL connection for the towfish and a standard Ethernet connection for the data processing computer. The system uses... (read more)
2017-01-30 08:42:45

CHIRP-ready Broadband Transducer

The M563 is AIRMAR’s dual-band CHIRP-ready broadband transducer designed for research and survey applications. The M563 is developed for OEMs with frequency agile sounders or CHIRP-capable sounders for use in shallow and coastal survey applications. The acoustic performance of AIRMAR’s broadband piezoceramic transducers include low-ringing and sensitivity, according to the manufacturer, resulting in optimal system performance including sharp, crisp acoustic pulses for improved clarity, resolution and measurement accuracy. The M563’s two broadband arrays have low and high-frequency bands allowing operation at discrete frequencies, broadband CHIRP or coded waveforms. The unit is available with a low-band frequency range of 25kHz to... (read more)
2013-06-04 10:56:03

EDI Releases CHIRP Sonar Tester

EDI has released the DSTS-5A/2C computer-controlled CHIRP and fixed sonar test set. Developed for technicians and engineers alike, the DSTS-5A/2C is a solution for test, evaluation and design of depth sounders and sonar systems. The DSTS-5A/2C emulates bottom echoes as well as fish echoes and allows the user to vary depth, reply level, period, pulse width and fish arcs. Interfaced through an RS-232 port, signal variables are controlled using the supplied Windows and Linux applications. Measurements of the pulse are displayed on the computer and commands can be sent over any terminal interface, this allows batch-scripts for automated testing suites... (read more)
2015-05-04 08:45:41

Dual-frequency 24-bit Chirp Transceiver

Falmouth Scientific (FSI, USA) has announced a new addition to its sub-bottom systems product line – a true 24-bit CHIRP sub-bottom profiling transceiver. The FSI HMS-622 CHIRPceiver and its associated transducers and arrays is developed to fulfil a wide range of survey needs. The HMS-622 is available in dual and single frequency configurations, and supports three frequency bands: standard LF (1KHz-10KHz), as well as optional ULF (200Hz-2KHz) and HF (8KHz-23KHz). A direct A/D input is available for the FSI Bubble Gun or other seismic systems, and it has an industry-standard Ethernet interface for data and control signals. The HMS-622 CHIRPceiver... (read more)
2015-04-15 03:45:13

L3 Klein CHIRP Sub-bottom Profiler

L-3 Klein has launched a CHIRP Sub Bottom Profiler (SBP) attachment for the 3000 Model Side-scan Sonar. The older SBP was a single transducer 3.5kHz "pinger" and delivered satisfactory performance for a lightweight SBP, but lacked penetration and resolution. The new SBP has a two transmit transducers and linear hydrophone Mills Cross configuration for optimum "sea bottom footprint", as well as a CHIRP transmit pulse.   Deliveries of the new K-CHIRP Model 3310 Sub Bottom Profiler are based on feedback from the demos; this SBP will raise the performance bar for Sub Bottom Profilers at a competitive price. (read more)
2007-08-20 04:04:15

iXSea Launches ‘ECHOES’ CHIRP Profiler Range

iXSea has recently launched ‘ECHOES’, a new generation of CHIRP sub-bottom profilers. Designed to meet the most demanding of geophysical applications ranging from coastal works to full ocean depths, the ECHOES CHIRP range provides better knowledge of the sediment acoustics and geology through increased penetration and superior resolution. The ECHOES CHIRP 3.5 kHz antenna is based on 7 wideband technology transducers which provide for improved directivity and has a power output of up to 9KW. The flat spectrum ranges from 1.8 to 5.2 kHz and is centred on 3.5 kHz. The data acquisition software (Delph Seismic+) includes a true multi-ping... (read more)
2005-05-05 12:00:00

AUV-based 3D Chirp Sub-bottom Profiling

Offshore Diamond Mining Applications
During the 1990s De Beers Marine identified a major business opportunity in radically improving its geological modelling capability. It set up a project to deliver the necessary geophysical systems and the team soon saw potential in integrating the company’s future development ideas for Chirp sub-bottom profiling sonar and sediment characterisation with the stability and accuracy of AUVs. The result was an ultra-high-resolution, 3D-volume imaging sub-bottom profiling system capable of low-cost, large-scale, deep-water (600m) mapping from a low-specification survey support vessel. Since 2001 De Beers Marine (DBM) has been routinely operating an Autonomous Underwater Vehicle (AUV) as its principle, ultra-high-resolution geosurvey... (read more)
2008-01-01 01:00:00

3D High-resolution Sub-bottom Profiling: 3D Chirp

3D Chirp is a surface-towed sub-bottom profiling system capable of imaging the upper tens of metres of the subsurface in three dimensions with decimetric resolution. This article describes the concept of high-resolution 3D sub-bottom profiling, outlines the design and application of the 3D Chirp system, and demonstrates its capabilities using a data set imaging a buried coffer-dam in the Port of Southampton, UK. The hydrocarbon exploration industry has routinely used marine 3D seismic reflection methods for over 30 years to image geological structures down to kilometres depth with resolution capabilities of some tens of metres with the aim of detecting... (read more)
2008-01-01 01:00:00

GeoChirp 3D Imaging

The GeoChirp 3D from GeoAcoustics Ltd provides the shallow-survey market with a new tool to image sub-surface structures and buried objects. The GeoChirp 3D provides a three-dimensional image of the sub-seabed with typical penetration of 10 – 30m and decimetric horizontal and vertical resolution, with the results presented as a high resolution 3D seismic volume. GeoChirp 3D has been designed to be deployed from small vessels of opportunity (anything with a Hi-AB crane or ‘A’ frame will do), the GeoChirp 3D can be applied to targets of marine geological, engineering, archaeological and defence interest. The capabilities of the system have... (read more)
2007-02-14 09:41:35

C-Surveyor II AUV Begins Gulf of Mexico Projects

C & C Technologies’ second deepwater AUV, C-Surveyor II, recently began field operations in the Gulf of Mexico. The C-Surveyor II AUV is modelled after C & C’s existing state-of-the-art AUV, C-Surveyor I, and includes numerous advances. Survey sensors on board include a multi-beam echosounder, Chirp side-scan sonar, Chirp sub-bottom profiler, methane detector, CTD system, and an Edgetech DW106 sub-bottom profiler customised with narrow transmit and receive beams to permit significantly deeper seabed penetration. In December 2005, C & C intends to upgrade the Chirp side-scan sonar to a new Dynamically Focused (DF) side-scan sonar system capable of providing five... (read more)
2005-11-28 12:00:00
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