Attachment 1 Specifications.pdf

ATTACHMENT 1

PR 53-4003-20 Page 1 of 3

MINIMUM TECHNICAL, PHYSICAL AND PERFORMANCE REQUIREMENTS

FOR

ACTIVE ELECTRONICALLY SCANNED ARRAY (AESA) ANTENNA

I. DESCRIPTION OF REQUIREMENT

The U.S. Naval Research Laboratory (NRL) Code 5349 requires a commercially available Active Electronically Scanned Array (AESA) antenna that will be installed on the NRL RC-12 aircraft. This AESA is required to fulfill NRL’s Next-Gen Multi-Mode Maritime Radar program requirement of performing simultaneous radar search, track, and imaging. This antenna be integrated in to our existing RF receiver, exciter and radar control system. The critical technologies that this antenna must include are multiple transmit and receive channels, multiple input multiple output (MIMO) operation, polarimetric operation, as well as frequency and pulse agility. To satisfy the objective of our flight test campaign, the product must be able to fit within the size, weight and power (SWaP) constraints of the aircraft, as well as survive the airborne environment.

DELIVERY REQUIREMENTS:

The antenna meeting all the required specifications shall be built, tested, and delivered within 12 months of contract award. This timeline is need to meet our aircraft integration and flight campaign schedule.

DELIVERABLES:

Interface control documentation provided within 6 months of contract award.

Mechanical drawings of the antenna, including physical size, weight, center-of-gravity, and connector types shall be provided within 2 months of contract award. This is necessary to facilitate the flight qualification and aircraft integration process.

Anechoic chamber results displaying the pointing accuracy at boresight and the scan limits for each polarization shall be provided 2 weeks prior to delivery

II. PERFORMANCE REQUIREMENTS

The AESA antenna SHALL meet all of the following minimum technical, physical, performance, and delivery requirements:

TRANSMIT CHANNELS: 2 Transmit Channels RECEIVE CHANNELS: 4 Receive Channels ANTENNA GAIN: > 30 dBi gain PEAK RADIATED POWER: >1 kW peak radiated BANDWIDTH: > 1.5 GHz bandwidth BANDWIDTH: at least 8.25 - 9.75 GHz INSTANTANEOUS BANDWIDTH: 800 MHz instantaneous bandwidth DUTY CYCLE: >10% duty PULSEWIDTH RANGE: Capable of pulsewidths ranging from 1 μS to 100 μS

PR 53-4003-20 Page 2 of 3

PULSE REPETITION FREQUENCY: PRF up to 15 kHz HORIZONTAL ELECTRONIC SCAN: at least +/- 45 degrees VERTICAL ELECTRONIC SCAN: at least: +/- 15 degrees

POINTING ACCURACY

o AZIMUTH RANGE: better than 0.5 degrees in azimuth at all scan angles o ELEVATION RANGE: better than 1 degree in elevation at all scan angles

DUAL POLARIZATION OPERATION: Switchable Transmit channel polarizations shall be capable of independent control Receive channel polarizations shall be capable of independent control Shall be capable to capable of changing polarization pulse-to-pulse Transmit channels shall be able to simultaneously transmit different center frequency waveforms Each transmit channel shall be able to operate independently of one another Capable of producing sum and delta beams Shall have user configurable transit and receive taper Shall be capable of steering beam pulse-to-pulse Shall have element level phase control RX NOISE FIGURE: < 5 dB RF INPUT: RF or IF RF OUTPUT: RF or IF ALTITUDE: Operate > 15 kft POWER CONSUMPTION: Consume < 1000 watts prime power WEIGHT: Weigh < 40 lbs SIZE: Shall fit within 12” H x 36” W x 12” D volume COOLING: Shall have integrated cooling

ENVIRONMENTAL QUALIFICATION REQUIREMENTS:

ENVIRONMENT: Operate in an airborne environment (Designed to meet MIL-STD

810G) SHOCK/VIBRATION: The system shall be designed to withstand exposure to a functional shock response spectrum with peak acceleration of 20 G, Te of 15ms and cross-over frequency of 45Hz as shown in Figure 516.6-8 Functional Shock Response Spectrum IAW MIL-STD-810G, Method 516.6, Procedures I and V.)

TEMPERATURE RANGE: -30°C to 60°C in operation HUMIDITY: The system shall be designed to be functional during and after exposure to ten 24-hour aggravated humidity-temperature cycles (see Figure 507.5-7 Aggravated temperature-humidity cycle) as specified in MIL-STD-810G, Method 507.5, Procedure II.)

SALT AIR: The system shall be designed to withstand exposure to salt fog of MIL- STD-810G, Method 509.5 (containing 5% salt solution sodium chloride by weight) at +35⁰ C and 95 % relative humidity for 24 hours wet, 24 hours dry, 24 hours wet and 24 hours dry. The DRP Sensor shall be inspected then subjected to 14 days wet salt fog test using the same 24-hour cycle to assess design margin).

MIL-STD-810G can be found at https://www.atec.army.mil/publications/Mil-Std-https://www.atec.army.mil/publications/Mil-Std-810G/MIL-STD-810G.pdf

PR 53-4003-20 Page 3 of 3

810G/MIL-STD-810G.pdf https://www.atec.army.mil/publications/Mil-Std-810G/MIL-STD-810G.pdf