Naval Research Laboratory (NRL-SSC), ATTN: Code 3250:JR, Stennis Space Center, MS 39529-5004

58 -- ACOUSTIC BACKSCATTERING SYSTEM SOL N00014-95-R-JR01 DUE 030995 POC Contact Point: Contract Specialist, Jerry Riles, 601-689-8978, Contracting Officer: Nancy M. Camp, 601-689-8990 Requirement is for an acoustic backscattering system capable of continuous operation 24 hrs per day for a minimum of four weeks. The system shall consist of a wet end (towed acoustic body) connected to a dry end (ship board) electronics with a 50 m faired multi-conductor coaxial cable which serves as a strength member to pull the Tow Body, power conductor and high speed communications link between wet and dry end electronics. Shall have the following minimum baseline specifications: The tow body shall, (a) house 4 transducers; (b) be capable of stable speeds of 30 kts, minimum, (c) electronics shall include transmitters, receivers, and four channel A/D, all under subsea processor control with digitized sonar and status data up-linked through and ethernet communications link. Electronics shall be contained in a single double O-ring sealed pressure housing, (d) transducers, pressure housing, and feed throughs shall be pressure tested to and operate to 300 m ocean depths. The Ship Board Electronics shall include an Intel 486 or Pentium chip based station with four DSP processing channels. System specific requirements include: (a) Operating frequencies of 100, 200 300, and 500 MHz, (b) Selectable transmit waveforms of short pulse AM envelope or FM (Chirp), (c) shall have acoustic source level of +240 dB ref 1uPa @ meter-all 4 channels, (d) shall have a dynamic range of 130db, (e) Preamplifiers: Maxim LT-28 op-amps @ 1.2 nv/vHz or better. The 200 KHz system shall detect a signal scattered from a scatter with TS=-100dB at a range of 100m at 3 dB above system noise, (f) Dual 17 inch SVGA high resolution color monitors, (g) Exabyte 8mm digital tape, 5 gbyte per cartridge, (h) Software supplied: DOS platform with windows operating environment. Source codes shall be provided to allow user custom programming. Shall be accompanied with operating and maintenance documents. Installation documentation shall also be included. Complete minimum requirements shall be included with the solicitation package. A firm fixed-price type contract is anticipated. Prospective vendors should request in writing, a copy of solicitation number N00014-95-R-JR01 to be issued on/about 08 Feburary 1995 with approximate closing date thirty days thereafter. FAX requests will be accepted at 601-689-8960. All responsible sources responding to the solicitation will be considered. The Government will not pay for any documents or information received as a result of this notice or associated solicitation package (0018)

Loren Data Corp. http://www.ld.com (SYN# 0223 19950119\58-0002.SOL)