Tel-Instrument Expands SDR-OMNI with New GPS Simulator Application

Key Features

12-Channel GPS L1 Satellite Simulation

Simulates up to 12 GPS L1 satellite channels to support realistic receiver acquisition, stable 3D position solutions, and repeatable aircraft-on-ground testing.

Flight Line and Hangar Ready

Supports GPS receiver checks, ADS-B position source validation, and coupled autopilot testing directly on the aircraft without dependence on live sky visibility.

Controlled Signal Application

Uses a dedicated GPS antenna coupler and RF cable assembly to support contained GPS simulation and minimize unwanted signal leakage during ground testing.

Static or Straight-Line Motion Simulation

Allows technicians to simulate either a stationary aircraft position or a continuous straight-line flight profile with adjustable altitude, bearing, ground speed, and vertical speed.

Remote Operation

GPS simulation setup and test functions can be controlled from a connected mobile device or tablet for convenient operation in the hangar or on the flight line.

Intuitive Touch Interface

A graphical touchscreen interface provides fast setup, clear satellite geometry visualization, and straightforward operation without complex menu navigation.
Expandable for Multiple Antenna Installations

Supports a range of aircraft GPS installation scenarios and can be adapted for more complex antenna configurations as required.

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Typical Applications

The SDR-OMNI GPS Simulator Application is ideal for:

• Post-maintenance GPS operational checks
• ADS-B position source validation
• Coupled autopilot and navigation system verification
• GPS antenna and coax troubleshooting
• Flight line, hangar, and installation support

It also provides a repeatable test environment for validating GPS-dependent avionics without waiting for favorable sky conditions or relying on live satellite visibility.

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In-Test Receiver Response

During GPS simulation, technicians can verify:

• Satellite acquisition and valid 3D position solution
• GPS source verification for cockpit navigation displays
• Stable position data for ADS-B and coupled autopilot checks
• Repeatable aircraft-on-ground troubleshooting without reliance on live sky conditions

 

Core Capabilities

The SDR-OMNI GPS Simulator Application provides a practical and portable GPS test capability built around the SDR-OMNI platform.

Core capabilities include:

• 12-channel GPS L1 satellite simulation using C/A code parameters
• Static position simulation or straight-line motion profiles
• Adjustable bearing, ground speed, altitude, and vertical speed
• Graphical satellite geometry display for intuitive setup and status verification
• Dedicated GPS coupler-based signal injection for controlled aircraft testing
• Compact, field-deployable configuration for flight line and hangar use

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GPS Application Kit Contents

The GPS Application kit includes:

GPS APPLICATON KIT – P/N 90000210

• GPS Coupler – P/N 89000281
• Transit Case – P/N 64030110
• RF Cable – P/N 75010631

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GPS Coupler Specifications

Parameter	Specification
Frequency	1575.42 MHz ± 3 MHz
Connector	TNC-F
Impedance	50 Ω
Power Rating	2 W
Coupling	32 ± 3 dB (centered over ARINC 743A footprint antenna)
Polarization	RHCP
Isolation	35 dB typical, 25 dB minimum
Dimensions	10.25 x 5.1 in.
Weight	5 lb
Temperature Range	-40 °C to +85 °C
Supported Antennas	ARINC 743A footprint GPS antennas (up to 7.0 in × 1.5 in)

 

Title	Document Code	Revision / Date	View / Download
Data Sheet		6-24-26	SDR-OMNI GPS SPECIFICATION SHEET
Selection Guide		1-29-26	SDR-OMNI SELECTION GUIDE