Orolia's solution provides GSG simulators with configuration for eCall devices, a testing tool and dedicated scenarios (option “OPT-ECL”).

Navigation warfare (NAVWAR) is an increasing area of focus for military missions, and it includes a wide range of Electronic Warfare strategies. One of the fastest-growing threats worldwide is GPS/GNSS signal jamming and spoofing. 

The world’s most GPS/GNSS reliant systems trust Orolia for mission assurance when failure is not an option.

Military aviation programs provide standard pilot training to ensure that they can handle fighters, drone swarms and other advanced threats. But as they run complex flight training scenarios and face off against live and virtual adversaries, what may be overlooked is the value of using GPS/GNSS simulation to duplicate actual cockpit instruments, rather than relying on facsimile instruments.

A major commercial aerospace manufacturer needed to launch small cube satellites into Low Earth Orbit (LEO) and Medium Earth Orbit (MEO), with small to medium sized payloads that supported Commercial Lunar Payload Services. Their goal was to simulate GNSS signals with their rockets, each of which had two antennas.

GPS and GNSS testing via RF generation/simulation supports faster and more comprehensive product testing and quality control.

This product brief describes the GNSS vulnerability test system built on Spectracom's GSG GPS/GNSS simulator platform.

Option to record and convert over-the-air GPS in a test scenario with the ability to make modifications.

An annual service plan so you get the most out of your GPS simulator.

A summary of service provided to enhance your GPS testing program.

A comparison of GPS simulator standard features.

Windows companion software to a Spectracom GPS simulator.

Advanced Galileo simulators supporting all GNSS constellations

Advanced GPS/GNSS simulators for testing with up to 64 channels and across several frequency bands.

An intelligent GPS repeater system offers a cost-effective indoor positioning solution for GPS-denied locations.

Option to use an external trajectory/motion simulator to generate corresponding GPS/GNSS RF signals.

Option for testing RTK-DGNSS applications

You may think that if your GPS/GNSS receiver is tested, you don’t have to use a simulator. But your design can change everything, and it may not behave as expected post-integration and in the field.

What you want to know about GPS for testers of GPS devices and systems.

The value of a GPS simulator is to generate RF signals corresponding to real-world scenarios for comprehensive testing from the bench. In addition to features such as multi-path and interference conditions, Orolia’s GSG series GPS/GNSS simulators can simulate signal obscuration via Environmental Models starting in application software version 6.1.

One of the benefits of Orolia GSG Series GPS/GNSS simulators is that it does not require any external controller and can operate for 31 days continuously (longer if the unit is connected to the internet). However, there are many situations where remote control from an external program is helpful and required when integrating GPS signals with other test parameters. GSG simulators can be connected to a PC using Ethernet, GPIB or USB. A SCPI command set allows for remote control and integration into test systems.

GPS simulators are able to test the integration of a GPS/GNSS receiver into a nav system by generating signals corresponding to virtually any condition including vehicle dynamics. They can also generate signals for other sensors for a comprehensive system test. As the simulator generates satellite data for a given trajectory, it simultaneously calculates position and attitude data in six degrees of freedom in real-time; forward/backward, left/right and up/down as well as the rotations about three perpendicular axes, pitch, yaw, and roll; which can be queried and used in integrated test systems.

Normally, a cold reset on a GPS/GNSS receiver under test is required to fully clear previous data to allow a new set of parameters to be used in a simulation. However, when a GNSS receiver is embedded in a product or is being tested on an assembly line, cold resetting a receiver is not always practical. Spectracom GPS/GNSS simulators have the ability to "Simulate Now". It will use the current date/time to match the receiver. It will also match its almanac data to allow for fast testing without the need for a cold reset.

Orolia's GSG-6 GPS/GNSS simulators can be configured for dual frequency L1/L2 simulation. It generates both the C/A and P code signals simultaneously for the GPS and GLONASS navigation systems. Though it does not have an encryption capability to simulate a true classified P(Y) signal, it is still a powerful tool for acceptance testing of classified Selective Availability / Anti-Spoofing Module (SAASM) receivers. This technical note explains how to use the simulator for military SAASM receiver testing and for also testing commercial carrier phase receivers that use the L2 P(Y) signal.

The typical application for a GPS simulator assumes an unobstructed view of the satellites. For advanced testing applications, it is possible to model the placement of the GPS antenna relative to the vehicle body. Starting in application software version 6.2 of the GSG series GPS simulators, vehicle modeling allows the simulated satellite signals to be blocked by the vehicle. Applications of this feature include aircraft maneuvers.

Spoofing is an attempt to deceive the GNSS/GPS receiver by broadcasting signals that the receiver will use instead of the live sky signals. This article describes a test system for spoofing allows testing the three major factors to consider in a spoofing attack, time synchronization to the signals to be spoofed, power level of the spoofing signal compared to the live sky signals, and accuracy of the position obtained by the spoofing signal to that of the actual position of the device being spoofed. Using a spoofing test system will allow a user to better understand the receiver and harden the system against spoofing attacks.

Signals from Global Navigation Satellite Systems (GNSS), such as the Global Positioning System (GPS), are very weak and usually cannot be seen indoors or underground. A common method to overcome the problem of receiving GNSS signals indoors or underground is to use a GPS/GNSS repeater with an antenna located outdoors to receive the GNSS signals and an amplifier/antenna to re-transmit the signal indoors. This paper describes the technologies and methods for creating an intelligent repeater system including time synchronization at the nanosecond, microsecond, and millisecond levels, how each synchronization level affects the overall system and methods for achieving each, power level considerations including power level requirements between zones and how they affect transitions from one zone to another, data transfer and example system configurations. While GPS is primarily demonstrated and tested, the possibility for adding other GNSS constellations such as QZSS, BeiDou, Galileo, and GLONASS are also presented.

If you manage a time-sensitive network, you'll want to consider how a leap second event will effect your applications. We offer these tips to help you be prepared.

As GPS receivers are built into more mission-critical devices for difficult application environments, and designed with the emerging capabilities of a multitude of GNSS constellations and augmentation systems, developers and manufacturers need better ways to guarantee performance. That’s where a GPS simulator comes in.