GDR9000 Digital Radar

Analyser

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Overview

• Introduction to Digital ELINT

• ELINT Overview

• Pros and Cons of Digital Receivers

• GDR9000 Approach

• GDR9000 Receiver

• Integration with Sysdel Meerkat

• Radar Analyser UI

• Intra-pulse analysis

• SP4000C Recorder

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Electronic Intelligence (ELINT)

• Covert gathering of information from electronic signals that do not contain speech or text (COMINT)

• Main goal of ELINT is to facilitate actions which will preserve the use of the electromagnetic spectrum for allies,

while denying its use to the enemy

• In contrast to RW or ESM systems, ELINT is aimed at long-term strategic planning, even (especially) during

peacetime

• ELINT Systems typically have automated elements, but also involve operator-in-the-loop analysis

• Information collected through ELINT can contribute to:

• Targeting and mission planning

• Optimization of both defensive and offensive military actions

• Operational intelligence

• Construction and maintenance of threat libraries and databases

• Driving the design and operation of ED/EA systems (RW, ESM, etc)

Digital Receivers

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Advantages:

• Maximum preservation of signal information

• Pulse parameters

• Modulation on pulse

• Pulse transients and amplifier characteristics

• High sensitivity due to frequency-domain processing gain

• Better PoI for LPI Radars

• Processing of time-overlapping pulses in different bands

• Extraction of advanced parameters (inter-pulse and intra-pulse modulation, emitter-specific fingerprinting, etc)

• Facilitates post-processing and recording

• Flexibility and reconfigurability

Constraints:

• Demanding sampling and processing requirements

• High-speed networking and storage requirements

• Early data reduction is critical

GDR9000 Receiver

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• 1x 3 GSPS 14-bit ADC

• Wideband processing

• 1x 204.8 MSPS 16-bit ADC

• Narrowband, high sensitivity processing

• 2x 40 GbE interfaces

• Raw IF Recording

• IQDW Transport

• Upgradable to 100 GbE

• Xilinx Ultrascale MPSoC

• Onboard signal detection

• Data reduction

• Receiver control

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Integration with Sysdel Meerkat

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GDR9000 Digital Receiver

Antenna

SysdelReceiver

1U Processing Server

Online ELINT

Processor

Sysdel Meerkat ESPU

ESPU HMI

HMI Workstation

GDR9000

4U SP4000C Storage Pod

RAID

40 GbE

10 GbE

IF Inputs

PDW interface

Radar Analyser UI

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Wideband Waterfall

Wideband SpectrumAnalysis Channel

Detected PDW Overview

PA

PW

PRI

PF

Pulse Selection

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Intra-Pulse Analysis

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Pulse Waterfall Instantaneous Amplitude

Instantaneous Frequency

Instantaneous Phase

Pulse Selection Table

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Intra-pulse analysis can reveal interesting signal characteristics for fingerprintingNon-uniform frequency response

Ground reflectionOvershoot

Ground Reflection

Intra-Pulse Analysis

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5 dB3 dB

Intra-Pulse Analysis

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Intra-pulse analysis across multiple detections confirms emitter-specific characteristics

3 dB3 dB3 dB3 dB3 dB3 dB3 dB3 dB3 dB3 dB

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Intra-Pulse Modulation

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SP4000C Recorder

• Up to 48 Solid State Drives (SSDs)

• RAID 0 configuration for maximum throughput

• 40GbE Networking

Three-tiered recording approach:

• Tier 1:

• Raw IF Data

• Maximum bandwidth and storage requirements

• Maximum potential for additional information

extraction during postprocessing

• Tier 2:

• IQDW and PDW Data

• Pre-extracted pulse metadata with

corresponding baseband IQ samples

• Tier 3:

• PDW Data

• Pre-extracted pulse metadata, no IQ data

Questions?

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