RF Engineer Internship

il y a 5 jours


Rue du Louvre Paris France Skynopy Temps plein
 Job Description — LEO Channel Simulator

We are looking for an RF Engineer Intern to design, build, and integrate a LEO satellite channel simulator that will be used for Skynopy's IVVQ activities and radio device testing.

You will work at the intersection of RF engineering, embedded systems, and signal processing to assemble a complete end-to-end testbed capable of emulating realistic satellite conditions.

Your mission will cover two main areas:

1. RF-Level Channel Emulation

You will assemble and control raw RF components — attenuators, VCOs, noise sources, power meters, filters — to build a physical channel simulator able to:

  • Generate AWGN to reproduce realistic SNR levels

  • Apply programmable attenuation to match operational input/output ranges

  • Emulate uplink and downlink Doppler for LEO orbits

  • Monitor power levels, spectrum, and spectral behaviour in real time

This RF chain will be controlled through microcontrollers using I2C/UART or similar interfaces and exposed to higher-level systems through a software API.

2. Baseband-Level Analysis (DIFI / SDR)

Using SDR technologies and the DIFI (Digital Intermediate Frequency Interoperability) standard, you will:

  • Process incoming DIFI streams in real-time (up to hundreds of MHz bandwidth)

  • Extract metrics such as: spectrum, RSSI, ADC saturation, packet coherence, latency

  • Implement analysis tools in a low-level compiled language (C/C++ or Rust)

  • Validate correct implementation of the received stream

  • Optionally apply advanced impairments (spectral inversion, phase noise, equalisation…) directly on the digital stream

This component ensures tight coupling between RF impairments and digital signal processing — a critical part of our ground segment validation strategy.


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