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ADVANCED HIL (HARDWARE-IN-THE-LOOP) OPTION




In GNSS simulation, the term HIL is generally used to indicate that the GNSS
receiver is not tested as a standalone device but integrated with other
simulators, equipment, and sensors.

In a HIL setup involving a Skydel GNSS simulator, we often have the following
elements (or concepts).

 

There are many possible variations. For example, the Autopilot could be a human
interacting with a virtualized dashboard, but the concept often remains the
same. The key principle is that the loop is often closed, and the true position
is not known in advance. Instead, the true position of the vehicle is determined
as the scenario progresses and fed in real-time to the Skydel GNSS Simulator.

In this setup, the Skydel GNSS Simulator receives the true vehicle trajectory in
real-time and generates the GNSS RF signal accordingly. A GNSS receiver tracks
the signal and computes its position. This position is sent to a navigation
system, such as the autopilot in this example. The autopilot analyzes the
position and sends commands to correct the vehicle trajectory. Those commands
are processed by the HIL simulator, which emulates the effect of such commands
on the true position.

For this setup to work properly, the integrator must carefully consider the
following questions:

 * What is the acceptable latency between the HIL Simulator input (Autopilot
   Command) and the Skydel GNSS Simulator output (GNSS RF Signal)?
 * How is this latency budget shared between the HIL Simulator, the Skydel GNSS
   Simulator, and the link connecting them?
 * How are synchronization and the clock system handled?
 * Can the HIL Simulator and the Skydel GNSS Simulator use a common clock
   source?
 * At which rate can the HIL Simulator update the true position of the vehicle?
 * What position data will be available (time, position, velocity, attitude,
   angular velocity, etc.)?


RELATED RESOURCES


> PRESS RELEASE


> BLOG: SKYDEL 22.5 – HIL SIMULATION MADE EASY


> ADVANCED HARDWARE-IN-THE-LOOP (HIL) OPTION


RELATED RESOURCES

HARDWARE-IN-THE-LOOP (HIL) TESTING FOR AUTOMOTIVE APPLICATIONS

Use Cases

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HARDWARE-IN-THE-LOOP (HIL) TESTING FOR FLIGHT SIMULATION

Use Cases

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Aerospace & Defense
 * Defense
   * Radars and Sensors
   * M-Code
   * Air Missile Defense
   * French Military
   * Ground Forces
   * Naval Operations
   * Military Aviation
   * Mobile Mission Systems
   * Combat Search and Rescue
 * Aerospace
   * Space
   * Commercial Aviation
   * Rotary Aviation
   * General Aviation

Critical Infrastructure
 * Finance
 * Automotive
 * Data Centers
 * Enterprise Networks
 * Public Safety
 * Manufacturing and Process Control
 * Security and Access Control

Products
 * Timing & Synchronization
 * Testing & Simulation
 * Emergency Locator Transmitters
 * Atomic Clocks & Oscillators
 * Interference Detection and Mitigation

About Orolia
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 * Privacy Policy
 * Contact
 * Resources
   * Videos
   * Events
 * Online Store

Support
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 * Skydel Onboarding
 * SecureSync 1200 Onboarding
 * Kannad ELT Onboarding
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