Internship | Target-matched radar waveforms

1 maand geleden


The Hague, Nederland TNO Voltijd

What will be your role?

The waveform design is one of the critical aspects in radar performance optimisation. Traditionally chirped waveforms are applied in radar, designed for signal-to-noise ratio optimisation when applying a matched filter for detection. This is however only one criterion that can be used for waveform design. Currently there is a growing interest in other criteria for waveform design. For detection of target in clutter, for instance, optimisation of the signal-to-clutter ratio may be a more suited criterion for the waveform design. Another objective for radar waveform design may be to highlight specific target features to improve not just target detection, but also target classification. Radar waveforms designed according to this criterion are so-called target-matched waveforms.

Target-matched waveforms are the focus of this assignment. Given a specific class of targets, the first step is investigating what properties of a target should be highlighted for detection or classification. The next step is to define suitable criteria for the waveform optimisation. The last step is the actual design of the target-matched waveform and validation of the performance of the waveform. Simulations are an important tool for this assignment, but the performance of the final waveform can be validated with actual radar measurements.

You will perform this assignment in the Department of Radar Technology. We are a passionate and creative group of professionals (60 people) dedicated to the specification, development and evaluation of innovative, high-performance MMICs, miniaturised and integrated RF subsystems, antennas and front-ends. The department is at the heart of novel, game-changing radar system and signal processing concepts for the military, space and civil domains.

What we expect from you

You are in the final stages of your degree in artificial intelligence, computer science, physics, mathematics, electrical engineering or a similar degree and have some track record in the field of signal processing or computer vision. You have experience in programming in Matlab and/or Python, you are pragmatic and focused on making things work. Next to technical expertise we value communication skills and a results-driven attitude.

What you'll get in return

You want to work on the precursor of your career; an internship gives you an opportunity to take a good look at your prospective future employer. TNO goes a step further. It’s not just looking that interests us; you and your knowledge are essential to our innovation. That’s why we attach a great deal of value to your personal and professional development. You will, of course, be properly supervised during your internship and be given the scope for you to get the best out of yourself. Naturally, we provide suitable internship compensation.



  • The Hague, Nederland TNO Voltijd

    What will be your role? Deep learning techniques typically thrive when large sets of labelled data are available. In the radar domain, labelled data tend to be scarce depending on the application area. So it would be beneficial if all available data could be used. However, in practice measurements may be made with varying radar waveform settings (such...


  • The Hague, Nederland TNO Voltijd

    About this position Passive radars are defined as a technology that uses signals transmitted by other (communication) systems (i.e., transmitters of opportunity), to perform target detection and parameter estimation (e.g., position, velocity, size, etc.) of the target. Recently, several companies have deployed broadband low-orbit communication...


  • The Hague, Nederland TNO Voltijd

    What will be your role? Deep learning techniques usually thrive when large sets of labelled data are available. In the radar domain, labelled data tend to be scarce depending on the application area. By exploiting expert knowledge it may be possible to improve the training process and overall performance when using only small labelled data sets. From...


  • The Hague, Nederland TNO Voltijd

    What will be your role? Radar observations are hampered by reflections from the background surrounding an object of interest (so-called radar clutter) and sometimes interference of other emitters. Radar clutter may exhibit some temporal structure, e.g., radar reflections from rolling sea waves or from the rotating blades of a wind turbine. Also...


  • The Hague, Nederland TNO Voltijd

    What will be your role? Nowadays, deep learning techniques are used in a wide variety of domains, including the radar domain. In the radar domain, deep learning is primarily applied for classification based on some 2D representation of the radar data, e.g., an Inverse Synthetic Aperture Radar (ISAR) image or a spectrogram (i.e., an image of signal...


  • The Hague, Nederland TNO Voltijd

    About this position Frequency selectivity is crucial for radar system. Spurious frequencies of the higher order harmonics generated in the chain of a front-end radar system can interfere or even damage other systems located in the vicinity. Frequency filtering operations are usually implemented along the RF chain of a transmitter (TX) by electronic...


  • The Hague, Nederland TNO Voltijd

    What will be your role? Active phased array antennas must comply with stringent requirements in terms of sensitivity to interference caused by other nearby radiating systems, especially in complex platforms, which are populated by an ever-increasing number of sensors and communication systems. Radio frequency interference can cause a number of issues,...


  • The Hague, Nederland TNO Voltijd

    About this position How can high-gain antennas be designed for small Cubesat systems? What will be your role? Reflectarrays are an attractive solution for high gain antenna system in space (Earth observation, SATCOM, etc.). High gain antennas usually are implemented by using quasi-optical systems realized by one or more curved reflectors...