U. S. ARMY ENGR, CEWES-CT, 3909 HALLS FERRY ROAD, VICKSBURG, MS 39180-3435

W -- LEASE OF TWO (2) SIMRAD SM 2000 MULTIBEAN SONAR TRANSDUCERS FOR THE PERIOD 13 APRIL 1998 THROUGH 17 JULY 1998 AT THE FISHERIES ENGINEERING TEAM SITE STEVENSON, WASHINGTON. SOL W81EWF-8014-4100 POC Purchasing Agent MALLORIE O. IRWIN (601) 631-7270 (Site Code DACW39) The Vicksburg Consolidated Contracting Office, Corps of Engineers, Dept of Army proposes to award a purchase order to Simrad, Inc., Lynnwood, WA, under authority of 10 U.S.C. 2304 (c)(1) for the lease of two (2) SIMRAD SM 2000 Multibeam Sonar Transducers for the period 13 April 1998 through 17 July 1998 for the purpose of research of fish passage and behavior. In an effort to assess fish behavior related to surface flow bypass at hydropower dams, Battelle Laboratory evaluated a new technology that showed great promise. The technology is "multibeam sonar". An advantage of the new technology is that it can track clusters or schools of fish in 3D as well as individual fish. Schools of fish are difficult to track with conventional techniques because they often occupy a greater volume than that sampled. With the large sample volume, small clusters of targets can be tracked in addition to single targets. The data processing complexity has been dealt with in proprietary software written specifically for SIMRAD multibeam sonar that evaluates fish tracks in three dimensions (3D) spatial/temporal dimensions and will include 4D spatial/temporal dimensions plus echo amplitude in future versions to be completed in March 1998. Sonar images will be displayed at resolutions up to 800 x 600 pixels. Sonar transmission rates for the system are rated to 20 piungs per second over the entire array. Data storage will be by hard disk, Jazz drives, and capacity DAT tape. The multibeam sonar system is coupled to a second system, to produce a three dimensional data set or ordered triplets (x, y, z fish coordinates on a ping by ping basis). The two systems will be synchronized to provide simultaneous information. The data from the two data sets will be time-tagged to provide precise alignment in time. Real time target tracking control will be provided through a propriety software supplement to the multibeam data acquisition software. Additionally, Battle's propriety post-processing software is used to track targets and merge files for input to an object-oriented database. The multibeam system to be leased is the SIMRAD SM 2000, operating at 200 kHz with a sonar head including an array of 80 elements producing 128 beams over 120 degrees (1.7 beams on 0.94 degree centers.) This resolutin is necessary to provide adequate resolution for fine-scaled fish tracking. The system will be operated under software control from a Windows based inteerface supplied by the vendor. The vendor has also modified the standard software to meet Battle's specific data collection and processing needs. Due to the complexity of the sonar analysis task, it is imperative that compatibility with Battle's proprietary software for data processing and analysis, as well as the sonar functionality, which has been customized for this application. NO OTHER SOURCES WILL BE SOUGHT. There is no solicitation document. Any inquiries should be received within five days from the date of publication. be a Commercial Item. (0070)

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