Pulsar Transmitter and Receiver Technical Characteristics

FCC ID: NX5DSSR-250C

Operational Description

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FCCID_671167

PULSAR TRANSMITTER AND RECEIVER TECHNICAL CHARACTERISTICS

TECHNICAL CHARACTERISTICS OF THE PULSAR DIGITAL SOLID—STATE RADAR SYSTEM 1.0 System Overview The Pulsar Digital Solid—State Radar System consists of a fully coherent transmitter, receiver, digital signal processor and a horizontally polarized 1.7 degree pencil shaped beam antenna, with the capability to be scanned over a hemispherical volume consisting of 360 degrees in Azimuth and 0 to 90 degrees in elevation. The digital signal processor employs algorithms to process weather events for display, including "rainfall rate", "radial wind velocities", "turbulence", andrainfall accumulation. These weather data are made available to the Meteorologist for analysis and dissemination. 2.0 Technical Characteristics The following tables describe the technical characteristics of the Pulsar Digital Solid— State Radar System Transmitter and Receiver: 2.1 Transmitter Characteristics Nomenclature Comments Transmitter Type Pulsed Solid—State Coherent Power Amplifier (SSPA) Operating Frequency Tunable from 5400MHz — 5700MHz Duty Cycle | 3% typical, 5% maximum PRF Preset Modes, ranging from 300pps — | 3000pps | Pulse Widths Preset Modes, ranging from 0.S5usec — 8Ousec e Peak Pulse Power 125 Watt modules, power added to | generate pulse power levels from 250W — | 10kW when combined TR Switch 3—port Circulator with Solid—State TR limiter 2.2 Receiver Nomenclature Comments Receiver Type Fully Coherent Superheterodyne, employing triple up conversion from a GOMHz source in the Signal Processor Noise Figure | 3dB maximum _ UP/Down Block Converter | Digitally Tuned Phase Lock Loop(2) Intermediate Frequency 6OMHz, stable frequency or non—linear chirped (+/—2MH2z) in pulse compression IF Processor IF is Digitized to 14—bits and couple to the digital signal processor, Digitizer rate is ~74MHz Receiver Bandwidth Matched Filter of 1/tau implemented digitally by the signal processor

Dynamic Range Dependent on receiver bandwidth, ranges | fro 90dB to 110dB Sensitivity As low as —130dB in wide pulse Range Normalization (STC) Algorithm, dlgltally applied in processor | that is equal to 1/r°


Document Created: 2006-05-31 12:31:44
Document Modified: 2006-05-31 12:31:44
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