GNSS Test Bed Development and Validation
GNSS Test Bed Development and Validation Summary: Development and validation…
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Positioning, Navigation and Timing (PNT) Laboratory
In-House development projects
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collaborations
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High Advance tech
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TDP Projects
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The Positioning, Navigation, and Timing (PNT) Technologies Facility at IIT Tirupati Navavishkar I-Hub Foundation (IITTNiF) is dedicated to advancing research, innovation, and indigenous technology development in PNT systems, with a particular emphasis on India’s NavIC satellite navigation system and next-generation Global Navigation Satellite Systems (GNSS).
Equipped with advanced infrastructure, including GNSS signal simulators, RF test and measurement instruments, Software-Defined Radio (SDR) and FPGA platforms, antenna measurement systems, and precision timing and synchronization systems, the facility enables comprehensive research, testing, validation, and prototype development.
Through collaborative research, industry engagement, hands-on training, and its Lab as a Service (LaaS) model, the facility fosters innovation, capacity building, and technology transfer. Aligned with the national visions of Atmanirbhar Bharat and Viksit Bharat 2047, IITTNiF is committed to strengthening India’s indigenous PNT capabilities and advancing technological excellence in satellite navigation and precision timing.
Focus Areas
Projects
Continuously Operating Reference Station (CORS) Network
Development and Establishment of a GNSS Continuously Operating Reference Station…
Public Network Time Protocol (NTP) Server
Public Network Time Protocol (NTP) Server Summary: Establishment of a…
GNSS Signal Strength Mapping
GNSS Signal Strength Mapping Summary: Mapping and analyzing the spatial…
GNSS Time Interval Counter (TIC)
GNSS Time Interval Counter (TIC) Summary: Development of an FPGA-based…
FPGA-Based Multi-Constellation GNSS Receiver Development
FPGA-Based Multi-Constellation GNSS Receiver Development Summary: Development of an FPGA-based…
GNSS Reflectometry (GNSS-R)
GNSS Reflectometry (GNSS-R) Summary: Exploring reflected GNSS signals for remote…
In-House Projects
Facilities & Capabilities
- GSG-8 Gen2 GNSS Signal Simulator
- EXG Vector Signal Generator
- EXA Signal Analyzer
- FieldFox Microwave Analyzer
- Mixed Signal Oscilloscope
- Real-Time Spectrum Analyzer
- RubidiumAtomic Clock
- Secure SyncHighPrecisionNTP Server
- Secure SyncHighPrecisionWhiteRabbit
- Microplotter Proto
- GNSS Reference Receiver
- PolaRx5S IonosphericMonitoringGNSS Receiver
- HYFIX GNSS Receiver
- CORS Network – Equipment
- WR-LEN – White Rabbit
- HATI Board – High-Accuracy Time Interval Measurement
- Probe Set – Oscilloscope Measurement Accessories
GSG-8 Gen2 GNSS Signal Simulator
Purpose:
The PNT Lab at IITTNiF advances India’s capabilities in satellite navigation, precision positioning, timing, secure navigation, indoor navigation, and AI-enabled mobility. Its focus is to build reliable, indigenous, and future-ready PNT technologies for industry, government, academia, and society.
Features:
- All MF/MC Signals via Individual or Composite Port
- Up to 6 vehicle or antennas in a simulation
- Simulate jamming, spoofing, meaconing,interference of all kind
- Unlimited number of jammers
- 1000 Hz simulation iteration rate
- Available in three configurations with up to 6 SDRs
EXG Vector Signal Generator
Purpose:
RF vector signal generator optimized for manufacturing test, providing signals for component parametric testing and receiver functional verification.
Features:
- Suitable for 5G, LTE, WLAN, Bluetooth, GNSS, aerospace, and defense applications.
- Fast switching speeds: <= 5ms in SCPI mode
- Option UNZ improves speed to <=1.15ms
- Option UNZ improves speed to <=1.5ms with digital modulation on
- Scalable performance - output power, ACPR, EVM,
- Bandwidth, can be upgraded via license key without added hardware
- Sub-800 μs switching speed for frequency, power, and waveform type changes
- Pre-defined, standards-based waveforms (LTE, W-CDMA, WLAN, etc.) for accurate, repeatable testing
- High-stability internal OCXO reference option available
EXA Signal Analyzer
Purpose:
N9010B EXA X-Series signal analyzer provides RF and microwave signal analysis for wireless communication, radar, GNSS and aerospace applications.
Features:
- Frequency Range: 10 Hz–13.6 GHz
- Analysis Modes: Spectrum Analyzer and I/Q Analyzer
- Fast Sweeps: Reduced spurious measurement time
- Processor: Quad-core, 16 GB RAM
- Display: 10.6-inch multi-touch screen
- Software Compatibility: PathWave X-Series measurement applications
- Applications: Cellular, wireless connectivity, and audio/video broadcast testing
FieldFox Microwave Analyzer
Purpose:
The FieldFox Microwave Analyzer provides portable RF and microwave analysis for field testing, maintenance, and troubleshooting of communication and radar systems.
Features:
- Frequency Range: 30 kHz–18 GHz
- Portable Design: Handheld microwave analyzer
- 3-in-1 Functionality: Cable & Antenna Analyzer, VNA, and Spectrum Analyzer
- Amplitude Accuracy: ±0.3 dB
- Cable Testing: Distance-to-Fault (DTF), VSWR, Return Loss, and Cable Loss
- Measurement Capability: Reflection and Over-the-Air (OTA) testing
- Applications: GNSS, satellite communications, radar, RF/microwave, aerospace, and defence
Mixed Signal Oscilloscope
Purpose:
The Tektronix Mixed Signal Oscilloscope provides high-performance waveform acquisition, analysis, and debugging for digital, and embedded electronic systems.
Features:
- Analog Channels: 4 channels
- Digital Channels: 16 optional channels via P6316 probe
- Serial Protocol Support: I²C, SPI, UART, RS-232/422/485, CAN, CAN FD, CAN XL, LIN, 10BASE-T1S, SENT
- Function Generator: Built-in 50 MHz Arbitrary Function Generator (AFG)
- Waveform Support: Sine, square, pulse, ramp/triangle, noise, DC, and other predefined waveforms
- Digital Pattern Generator: 4-bit output with 4k points per bit
- Capability: Mixed-signal analysis, protocol triggering, and decoding
Real-Time Spectrum Analyzer
Purpose:
The Tektronix RSA306B Real-Time Spectrum Analyzer provides real-time RF spectrum analysis and signal debugging for wireless communications, and spectrum monitoring.
Features:
- PC-Based Analysis: Hardware acquisition with PC/software-based measurement and display
- Software: Tektronix SignalVu-PC RF Signal Analysis
- Real-Time Analysis: DPX spectrum and spectrogram technology
- Advanced Triggers: Frequency Mask Trigger (FMT), Time-Qualified Trigger, and DPX Density Trigger
- Sweep Speed: 2 sweeps per second across 6.2 GHz
- Signal Capture: Detects signals as short as 15–27 μs
- Detection Reliability: 100% Probability of Intercept (POI) for specified signal durations
RubidiumAtomic Clock
Purpose:
The AccuBeat AR133A Rubidium Atomic Clock provides a high-stability frequency and time reference with precision 10 MHz and 1 PPS outputs for timing-critical RF, GNSS, and communication systems.
Features:
- Frequency Accuracy: 210-12
- 1 PPS Accuracy: 100 ns
- Relative to 1 PPS input when disciplined
- Short-Term Stability: 510-12 at 100 s
- Phase Noise: −150 dBc/Hz at 10 kHz
- Outputs: 10 MHz and 1 PPS
- Supply Voltage: 15 VDC / 12 VDC
- Steady-State Power Consumption: Less than 8.25 W
- Power-Saving Mode: Less than 1.8 W
- Dimensions: 77 × 77 × 25.4 mm
- Long-Term Stability: 510-11/month
Secure SyncHighPrecisionNTP Server
Purpose:
A highly secure, modular time and frequency reference system that synchronizes critical defense and commercial network infrastructure using NTP and PTP protocols.
Features:
- Multi-band, multi-constellation GNSS support (GPS, Galileo, GLONASS, BeiDou, QZSS, and NavIC).
- High-precision 10 MHz frequency and 1 PPS timing outputs.
- Supports NTP, PTP, IRIG-B, NMEA, and Have Quick timing interfaces.
- Software-configurable I/O with TTL, RS-232, and RS-485 support.
- Available in 2-slot (2402) and 6-slot (2406) modular configurations.
- Supports 40+ expansion option cards for frequency, phase, and network timing.
- Field-upgradeable modular architecture for future expansion.
- Designed for telecommunications, defense, aerospace, power utilities, and data centers.
Secure SyncHighPrecisionWhiteRabbit
Purpose:
A reliable, high-precision time fan-out solution that distributes White Rabbit sub-nanosecond synchronization across 1G Ethernet-based networks through 16 optical fiber ports.
Features:
- Sub-nanosecond time accuracy (less than 1 ns) using the White Rabbit protocol, a high-accuracy PTP extension based on SyncE.
- 16 SFP optical timing ports supporting White Rabbit, PTPv2, and NTP simultaneously.
- Multi-source timing with seamless failover between White Rabbit, external GNSS/atomic clocks, PTP, and NTP, with precise source monitoring.
- Interoperable with standard PTP IEEE 1588 profiles, including Default, G.8265.1, G.8275.1, IEEE C37.238-2011, IEEE/IEC 61850-9-3, Enterprise, and IEEE 1588-2019 High Accuracy.
- Supports NTP v2, v3, and v4.
- Optional holdover oscillator maintains high accuracy even if all timing references are lost.
Microplotter Proto
Purpose:
The SonoPlot Microplotter Proto is a fluid dispensing system designed for printing conductive inks on substrates such as FR-4, Rogers, and glass for printed electronics and antenna applications.
Features:
- Non-contact ultrasonic dispensing technology that pumps fluid to the tip of a glass micropipette, forming a meniscus that can be touched off as a droplet or moved to draw continuous features.
- Draws true continuous lines and arcs, suitable for conductive ink and printed electronics traces.
- Compact desktop footprint, providing a lower-cost entry point to SonoPlot's Microplotter technology.
- Automatic surface-height calibration for consistent, repeatable dispensing, with variability as low as 10%.
- Handles high-viscosity and saturated fluids up to 450 cP without clogging, beyond standard inkjet capabilities.
- Applications include rapid prototyping, printed electronics, MEMS printing, and protein/biological microarrays.
GNSS Reference Receiver
Purpose:
The Trimble Alloy GNSS Reference Receiver provides high-precision, continuous GNSS positioning and timing for Continuously Operating Reference Station (CORS) networks and scientific applications.
Features:
- Tracks GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS), and SBAS.
- Supports CORS, RTK, PPP, and Network RTK applications.
- Integrated multi-frequency, multi-constellation GNSS receiver.
- Built-in web interface for configuration and remote monitoring.
- Supports NTRIP Server/Client and RTCM data streaming.
- High-precision 1 PPS timing output.
- Ethernet connectivity with secure remote access.
- Rugged, weather-resistant design for continuous 24/7 operation.
- Supports RINEX logging and real-time correction services.
Collaborations
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Whether you are a researcher, startup, industry partner, government organisation, academic institution, or student, IITTNiF provides opportunities to innovate, collaborate, develop technologies, and create national impact.