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Everything You Must Know And Note About The GNSS Simulator Solutions

Everything You Must Know And Note About The GNSS Simulator Solutions


Global Navigation Satellite System or GNSS is the commonly used term for a system providing navigation to users across the globe. Every global navigation system uses a collection of satellites, that help in broadcasting signals, processed by GNSS receivers. The signals play a critical role in determining the location, speed, and time of global users. Common examples of GNSS could be found in the operations of GPS, GLONASS, and Compass.


Understanding the concept of the GNSS simulator


A GNSS simulator delivers an effective and efficient technique to analyze and evaluate the GNSS receivers and the associated systems. It emulates the environment of the receiver on an active platform through a modeling vehicle or satellite motion, signal features, atmospheric impacts, etc. The overall functioning makes the receiver steer as per the essential testing parameters. The GNSS receiver processes the signals accurately in a simulation setup. 


Testing with a GNSS simulator


A GNSS simulator brings an improved alternative for testing compared to the actual GNSS signals in a real-time environment. Unlike the setup of live testing, the GNSS simulator testing ensures optimal control over the simulated satellite signals and the environmental setup. With a GNSS simulator, professional testers can conveniently run and generate test results in various testing scenarios without losing control over the following critical aspects – 


  • Date, time, and location – With the simulators, it is possible to generate GNSS constellation signals anywhere and at any time. It is possible to create scenarios of any kind in the earth or space setup. The versatile testing facilities make it a perfect choice, as you do not need to step outside the lab. 
  • Vehicular motion and direction – Simulators can test accurately according to the motion and direction of the vehicles with the GNSS receivers. It could be an aircraft, ship, spacecraft, or even a land vehicle. Simulation scenarios with varied vehicle dynamics, for random routes and trajectories, make the testing process successful. All these are possible without moving outside the lab!
  • Environmental conditions – Simulators positively impact the GNSS receiver performance, including the dynamic atmospheric conditions, multipath reflections, antenna characteristics obscuration, signal interference, etc. The different atmospheric and environmental setups could be tested with a simulator under a controlled laboratory environment.
  • Errors and irregularities of signaling – Simulators ensure optimal control over the critical components and accurate features of the GNSS constellation signals. It can also help determine the equipment performance in case of errored signaling. 


The working ways of the GNSS simulator


Fundamentally speaking, a GNSS simulator is a laboratory tool for testing ease. The simulator plays a critical role in recreating the output bases on an actual GNSS antenna. It needs to take place at a specific time and place. The outcome is reliable only if they simultaneously consider and process the following factors – 


  • The motion of satellites in the GNSS collections and constellations
  • The Ionospheric and atmospheric features that could impact the signal broadcast
  • The antenna configuration and signal placement
  • The vehicular motion 


Apart from the mentioned parameters, other critical aspects also determine the result's accuracy. These parameters can impact the properties of the RF signal reaching the simulated antenna. 

The simulator utilizes the signal and parameters to calculate the output for the GNSS receiver. The receiver converts the output generated by the GNSS simulator.


  • Advantages you must know – The modern-day GNSS simulators in the lab help eliminate the practical limitations. One can obtain accurate output and ensure the result’s reliability. The test programs are productive and efficient. It can evaluate numerous scenarios and deliver an accurate analysis compared to the output of live-sky testing. 


Choosing the GNSS simulator


Selecting the apt GNSS simulator is critical for multiple reasons. One needs to stay assured of the testing reliability. It is essential to see the simultaneous data output from the receiver while testing. Thus, one must be careful while making the selection. Select a simulator that helps you test and connect directly to the receiver device. It can be through a serial port, ensuring improved simulation. It is vital for determining how the device would act in the real world. This way, you can observe the deviation between the simulated and the real-time outcome on the receiver’s end.  


Additionally, ensure that the GNSS receiver can adapt to the increased availability of satellites. Simply put, it must ensure optimal functioning with the GNSS constellation. The simulator must offer improved controlling measures for the constellations and dynamic frequency bands. Find a reliable GNSS simulator to alter the power levels of the distinct satellite signals during the testing phase. It is critical to review the performance and signal loss chances in an application. 


Know the facts from a reliable resource


With all the critical information, it would be easy to gain an overview of the GNSS simulators. Get authentic information if you need a simulator for a professional application or project. Rely on experts in the domain and ensure functional accuracy. 


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