Loren Data Corp.

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COMMERCE BUSINESS DAILY ISSUE OF APRIL 2,1998 PSA#2065

Dahlgren Division, Naval Surface Warfare Center, 17320 Dahlgren Road, Dahlgren, VA 22448-5100

66 -- DOPPLER PROCESSOR VME BOARD SOL N00178-98-Q-0163 DUE 042198 POC Laurie Campbell, SD18 540-653-4902 E-MAIL: Naval Surface Warfare Center, Dahlgren Division, lmcampb@nswc.navy.mil. The Government intends to purchase on a sole source basis Acromatics Model 515 Doppler Processor VME Boards (3 each) which are manufactured by Acromatics. The Government requires these Doppler Processor VME Boards to be able to plug into and become a part of Acromatics 2220V telemetry data processor (TDP) which are used in the Navy's MK75 MOD 1 shipboard telemetry receiving system. The Doppler Processor VME Boards for the 2220V TDP requires access to Acroamatics proprietary firmware and software information. The following specifications apply: Doppler Video Processing Module: This module shall be a 6U, single width VME card which plugs in to and is controller by an Acroamatics 2220V Telemetry Data Processor. The module shall accept Doppler video data in two forms, analog and digital. The module shall process the Doppler data using Fast Fourier Transforms (FFT) display the resulting frequency information on an Astromed MT9502 chart recorder via an IEEE-488 interface bus. Analog Doppler Video: The Doppler processing module shall accept analog doppler video in two forms; baseband doppler and translated doppler. The module shall accept baseband doppler in the frequency range of 10 Khz to 210 Khz. The module shall accept translated doppler in the frequency range of 210 Khz to 350 Khz. The capability to downconvert translated doppler by 200 Khz shall be provided. Analog doppler shall be converted to a digital word format with a minimum resolution of 8 bits and shall be sampled at a rate sufficient to recover complete frequency spectral information from 10 Khz to 210 Khz. Digital Doppler Video: The doppler video processor shall also accept digitized doppler video which is embedded within a PCM stream. The doppler processor shall accept embedded digital doppler words which are between 1 and 16 bits in length. The user shall be able to define the location of the doppler words within a frame. The processor shall accept doppler words which are located anywhere within the frame. The doppler processor shall accomodate digitized doppler which is sampled at rates up to 600 Kwords/second. Dynamic Word Length Change: The doppler video processor shall be capable of accommodating dynamic changes in word length and associated frame location for embedded digital doppler. A word length/location change shall be signified by a known value change of a doppler video mode parameter also embedded within the PCM stream. Doppler Video Processing: The doppler video processor shall convert input doppler data in the time domain to processed output doppler data in the frequency domain using a Fast Fourier Transform (FFT) process. The processor shall be capable of performing this process on either analog doppler or digital doppler. Frequency Resolution: The doppler processor shall be capable of performing user selectable FFT sizes of 128, 256, 512 or 1024 data samples in flight mode. Data Display: The doppler processor shall be capable of displaying processed data to an Astromed MT9502 chart recorder. Processed doppler video information shall be displayed to the Astromed MT9502 Chart Recorder in a frequency versus time format using shades of grey. Shades of grey shall be generated using a half toning scheme with each shade of grey being generated from a minimum 4 by 5 matrix of dots on the chart recorder. Darker shades of gray shall indicate higher doppler amplitudes. The user shall be able to select whether the grey scale is represented using a logarithmic or linear scale. The horizontal axis on the chart recorder shall represent frequency with the highest frequency being located on the right side of the recorder. The vertical axis shall represent time. The doppler display shall "scroll" vertically. Auxiliary Function Display: The doppler video processor shall have the capability to display up to 4 additional parameters from the telemetry stream along with the doppler display. Display of auxiliary functions shall be time correlated with processed doppler display. Time Bars: The doppler processor shall be able to insert time bars into the display at user specified intervals. Real doppler video processor shall ingest either analog or doppler input data in real time, FFT process the data and display the processed data to the chart recorder at a rate of a at least ten 512 point spectral lines per second. The doppler processor shall also provide the capability to archive doppler data, IRIG time and the auxiliary functions required in paragraph 3.5.3.3 to a removable hard disk during the real time display process. The removable hard disk shall be included as part of the doppler processor and shall provide a minimum of 500 megabytes of storage. Post Test Display Mode: In the post test display mode, digitized doppler, auxiliary functions and IRIG time shall be recovered from a disk file which was previously archived in the real time display mode. The archived doppler data shall be FFT processed and displayed on the chart recorder with user definable time resolutions as small as 500 microseconds per spectral line. The user shall be able to select an IRIG time window for which archived doppler data is to be processed and displayed. Award is to be made under Simplified Acquisition Procedures. All responsible sources shall provide manufacturer's specifications with their fax quote which shall be considered by Naval Surface Warfare Center, 17320 Dahlgren Road, Dahlgren Division, Dahlgren, VA 22448-5100. Telephone is 540-653-4902. Fax number is 540-653-6812. Attn: Laurie Campbell, Code SD18. THE GOVERNMENT SHALL NOT ISSUE A WRITTEN QUOTE AS ALL ITEMS ARE IDENTIFIED IN THIS CBD NOTICE. This procurement will be awarded on an ALL OR NONE BASIS. All items will be shipped to FOB Destination to the Naval Surface Warfare Center, Dahlgren, Virginia 22448. Closing date is 21 April 1998. Anticipated award by 28 April 1998 with delivery by 01 July 1998. (0089)

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