Projects / Programmes
THz signal analysis using complex-valued deep neural networks
| Code |
Science |
Field |
Subfield |
| 2.08.00 |
Engineering sciences and technologies |
Telecommunications |
|
| Code |
Science |
Field |
| T121 |
Technological sciences |
Signal processing |
| Code |
Science |
Field |
| 2.02 |
Engineering and Technology |
Electrical engineering, Electronic engineering, Information engineering |
Terra Hertz, radar, Optimization techniques, Neural Networks, System design
Researchers (8)
| no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
| 1. |
20862 |
PhD Dušan Gleich |
Systems and cybernetics |
Head |
2018 - 2021 |
0 |
| 2. |
29302 |
PhD Marko Malajner |
Telecommunications |
Researcher |
2018 - 2021 |
0 |
| 3. |
04799 |
PhD Peter Planinšič |
Systems and cybernetics |
Researcher |
2018 - 2021 |
0 |
| 4. |
51027 |
Blaž Pongrac |
Telecommunications |
Researcher |
2019 - 2021 |
0 |
| 5. |
27703 |
PhD Andrej Sarjaš |
Systems and cybernetics |
Researcher |
2018 - 2021 |
0 |
| 6. |
03778 |
PhD Rajko Svečko |
Systems and cybernetics |
Researcher |
2018 |
0 |
| 7. |
38980 |
PhD Danijel Šipoš |
Telecommunications |
Junior researcher |
2018 - 2021 |
0 |
| 8. |
51756 |
Marko Vovk |
|
Technical associate |
2018 - 2021 |
0 |
Organisations (1)
Abstract
Based on our research work in past ten years where we worked on processing of radar signals and implementations of various radar system for Earth’s surface observation, we will in this research project upgrade knowledge with radar in Tera-Hertz (THz) band. Observation of surfaces and structures of objects has huge practical potential in field of safety and materials which cannot be observed with bare eye. Modern technologies are capable to detect micro cracks in materials and sense materials behind walls and under clothes. Medicine desire application where is possible to remote measure of life function of patient, like breathing and heart biting. Some of this function it is possible to sense with low price equipment. This research area is very interesting and rapid developing, since the necessary equipment for the implementation of THz radar became affordable. The idea is to transfer knowledge from generation and focusing SAR data in the THz field and also investigation and implementation of THz radar. We will examine the device for generating and receiving of THz signals. Here we see the contribution in designing THz radar using micro-processing of optical fibres technology and laser diode controlling in order to generate THz waves. THz radar will be used for three-dimensional (3D) tomography. Our research may later turn in applications to detect various gas admixtures, detections of cancer cells and implementation of THz camera for physical phenomena observation.
Thera are two project objective. The first is to investigate the most appropriate today available technology for THz radar implementation. Here we will focus on innovative approaches for THz waves generation. The second objective of the research project is the analysis of the interaction of THz waves with different objects and to lay the foundations for the processing of THz waves, which will be used in future real applications. In this research project we will first design laboratory THz radar prototype. The radar will be based on a similar principle as the interaction of the optical signal with the photo conductive antenna. This can be achieved by using the micro-processing of optical fibres and laser diodes controlling. Current state of the art in this field reveals that it is impossible to generate any shape of THz waves. In the research project, we will propose a special way of control the laser diode with which will be possible to change the frequency of the THz signal and thus affect the shape of the output signal, which is needed to implement the THz radar with synthetic aperture. In this section, we will investigate principles of generating a chirp signal using of laser and laser diode and observe the shape of the received signal on receiving photo conductive antennas. Here we propose antenna arrays in THz band for generating THz signals using. Also we will deal with radar techniques for generating and receiving a signal, such are Spotlight, Stripmap and Stearing modes.
We will also develop algorithms for focusing SAR images and algorithms for the visualization of received signals. We will propose two methods, measuring of received signal strength and measuring of Time of Flight (ToF) and in this way enable of 3D visualization of objects. We will be using the technique SAR, where we will develop algorithms to automatically identify the type of data and the type of surface. We will propose techniques of interferometry for the detection of changes in materials and on surface of materials.
The last part of the project introduces a use of complex valued convolutional networks for THz data recognition. The emphasis will be on proposing operators for complex valued convolutional network and develop learning algorithms. Our recent internal findings showed that the complex valued approach can improve recognition rate for more than 10% in very noisy environments.
Significance for science
The project with proposed solutions shall offer new methods for THz waves generation. The new method will ensure new low cost solution for THz waves generation, which mean that the high expensive equipment will not be needed. With suggested approach, we shall provide the THz technology to the broader research and development audience and initiate a faster development and usability of THz field.
The goal of the proposed project is to develop and realize the pilot application, which will lead to the acquisition of the applied knowledge on the field. The radar techniques are used in many different industrial, medical and everyday applications such as, food control, material structure control, noninvasive tissue and human body inspection etc. The obtained project solutions shall allow new economical approaches in science, industries and medicine, which mean that the new advanced technique for electro-optical elements and laser diode control will be used. The new proposed technology will allow further development of new generations of the THz- sensors. Also, new pervasive approaches in radar technologies for contactless sensing of different physical quantities, in many different fields as an industry, medicine, every day and other applications will be presented. All the proposed concepts are original and unique and can be immediately transferred to the potential application in fields. It is also expected that the all obtained new knowledge and skills will be published in scientific paper to spread the achievements to broader scientific audience. All the attended partners will ensure special attention to the research work, with the aim not to acquire only the new, but also to develop the current valued scientific concepts. All the built prototypes in the time of the running project, can lead to the applied industrial products and application. The research work will have focused on the collaboration with local and global industrial partners to ensure better collaboration between scientific and economy sphere.
Significance for the country
The project with proposed solutions shall offer new methods for THz waves generation. The new method will ensure new low cost solution for THz waves generation, which mean that the high expensive equipment will not be needed. With suggested approach, we shall provide the THz technology to the broader research and development audience and initiate a faster development and usability of THz field.
The goal of the proposed project is to develop and realize the pilot application, which will lead to the acquisition of the applied knowledge on the field. The radar techniques are used in many different industrial, medical and everyday applications such as, food control, material structure control, noninvasive tissue and human body inspection etc. The obtained project solutions shall allow new economical approaches in science, industries and medicine, which mean that the new advanced technique for electro-optical elements and laser diode control will be used. The new proposed technology will allow further development of new generations of the THz- sensors. Also, new pervasive approaches in radar technologies for contactless sensing of different physical quantities, in many different fields as an industry, medicine, every day and other applications will be presented. All the proposed concepts are original and unique and can be immediately transferred to the potential application in fields. It is also expected that the all obtained new knowledge and skills will be published in scientific paper to spread the achievements to broader scientific audience. All the attended partners will ensure special attention to the research work, with the aim not to acquire only the new, but also to develop the current valued scientific concepts. All the built prototypes in the time of the running project, can lead to the applied industrial products and application. The research work will have focused on the collaboration with local and global industrial partners to ensure better collaboration between scientific and economy sphere.
Most important scientific results
Interim report
Most important socioeconomically and culturally relevant results
Interim report
