Rendezvous and Proximity Operations

Rendezvous and Proximity Operations

mmWave Radar Solutions for RPO

Rendezvous and Proximity Operations (RPO) radars are vital tools for space missions due to their precision, reliability, and adaptability to the unique challenges of the space environment.

Why RPO Radars?

HIGH ACCURACY
  • Access skilled space technology engineering resource on demand to capitalize on market opportunities
ENHANCED DETECTION
  • Excellent object detection capabilities – short wavelength ensures large RCS even from small objects
  • Accurate navigation, tracking & monitoring of other spacecraft and debris – combining range, Doppler and/or bearing information
  • Imaging capability – high-resolution system can discriminate different parts of larger spacecraft
ZERO-LIGHT OPERATION
  • Operates effectively in low-light conditions – active radar sensor does not require external illumination
  • Unlike camera-based sensors, our radar can operate seamlessly when pointed into the sun, in low/no light or eclipse
ROBUST PERFORMANCE
  • Solid-state design for improved reliability in challenging space environments
  • Aluminum antenna provides protection from heavy-particle radiation
  • Proven ability to withstand shock and vibration from launch
  • In-orbit upgradable – adjustment to transmitted waveforms and processing algorithms
FLEXIBLE INTEGRATION
  • Radar can be placed behind RF-transparent materials, including appropriately designed ceramics
  • Low-profile design allows operation even on small CubeSats
  • Adjustable power modes for reduced power consumption requirements

RPO radars play a crucial role in ensuring the safe and efficient orchestration of space missions, allowing for the precise manoeuvring and coordination of spacecraft in the unique environment of space.

James-Henderson, Lead Consultant
James Henderson

Lead Consultant

The challenge of space – where RPO radars excel

RPO radars are crucial tools for detecting and navigating to large objects in space like active satellites and debris. Specifically built for space , these radars accurately measure distance, velocity, and trajectory. They play a critical role in safely engaging with other objects and providing reliable data for spacecraft guidance systems.

RPO radars excel in zero-light conditions and are both solid-state and more durable than optical devices, making them an essential addition to the sensor suite of space missions.

“Best Use of Innovation” Winner 2025

Plextek has been recognised for Best Use of Innovation at the Global Business Tech Awards for our pioneering radar technologies for space. This award is a testament to our commitment to the innovation of space technology, developing world-leading radar solutions that drive sustainability in orbit. Judges comment: “It’s refreshing to see a solution tackling such a global sustainability challenge.”

Technical Paper – Sensing in Space

Explore the cutting-edge technology of mmWave radar and its impact on space missions in our technical paper “Sensing in Space”. Gain insights into safety and efficiency improvements, customization options, and performance optimization. Stay informed about the latest advancements in space technology.

Collaboration with ClearSpace

Collaboration with ClearSpace

Plextek partnered with ClearSpace, a company specializing in space debris removal, on a project to develop RPO radars that facilitate the precise rendezvous and capture of space debris. This collaboration leverages Plextek’s expertise in radar technology to support ClearSpace’s mission of ensuring the sustainability of space activities through active debris removal initiatives, as part of their CLEAR mission.

Game-Changing Radar for the CLEAR Mission ClearSpace

“In this mission, we chose Plextek due to their proven technical expertise. Their radar systems are instrumental for achieving the paramount need for safety and precision in proximity operations.” Valentin Valhondo, Technical Program Manager, ClearSpace.

Why work with Plextek?

There is no one-size-fits-all when it comes to sensing

We work with you to assess which sensing technology is most suitable for your missions and goals.

Access 35+ years of experience in mmWave radar tech design

Experts in innovations for space missions, ensuring reliability in harsh space environments.

Enhance radar performance

Suitable for operation in challenging environments mitigating for outgassing, atomic oxygen, radiation events, solar loading.

Because of our experience in this field, Plextek has been “pulled” into the space domain to fill the need of delivering space qualified radar. Our mmWave technology is vital in RPO operations, offering precision and reliability in tracking and rendezvous manoeuvres, crucial for ensuring the success of space missions.

Richard Jacklin, Commercial Lead
Richard Jacklin

Commercial Lead – Space & Satellite

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