Based on the requirements on high resolution and high signal-to–ratio for infrared thermal imaging technology and infrared nondestructive detection, the paper firstly introduces their research significance and basic concept, and compares their differences and advantages in basic theory, research scale and instruments design. Then the paper elaborates the author and his team, after three periods of researches that focusing on the theory, experiments and technology, have completed the production of infrared quantum spectral detection principle prototype in December 2014. All tests and experiments show that every technical indicators meets the requirements, the resolution is 2-3 times higher than that of coherent light detection imaging, which provides significant technical basis for the production of infrared quantum spectral imaging engineering prototype. Finally, the paper summarizes the key technical problems to be solved and application outlook for the infrared quantum spectral detection imaging technology research.
Based on the requirements on high resolution and high signal-to–ratio for infrared thermal imaging technology and infrared nondestructive detection, the paper firstly introduces their research significance and basic concept, and compares their differences and advantages in basic theory, research scale and instruments design. Then the paper elaborates the author and his team, after three periods of researches that focusing on the theory, experiments and technology, have completed the production of infrared quantum spectral detection principle prototype in December 2014. All tests and experiments show that every technical indicators meets the requirements, the resolution is 2-3 times higher than that of coherent light detection imaging, which provides significant technical basis for the production of infrared quantum spectral imaging engineering prototype. Finally, the paper summarizes the key technical problems to be solved and application outlook for the infrared quantum spectral detection imaging technology research.
Based on the basic theory, information mechanism and imaging experiment of quantum remote sensing, quantum spectral imaging and quantum detection and identification, as well as the production of principle prototype, the author conducted researches on high-sensitivity target detection of infrared optical quantum squeezing that can breakthrough quantum noise limit, high resolution imaging technical solutions and imaging principle experiment, focusing on realizing of high sensitivity long-range target detection, system composition and working principle of high-resolution imaging experimental device, infrared quantum optical squeezed light preparation and injection, and quantum noiseless amplifier, aiming to resolve relevant crucial problems, which provide technical basis for the production of engineering prototype and its experimental device. Besides, based on the project assignment, the paper firstly introduces research status at home and abroad, the development tendency, and research significance and necessity, then it emphasizes the research target, research content and key technical index, as well as the overall technical solutions, solutions and feasibility analysis for key technologies. Finally, it summarizes benefit analysis, project arrangement and outcome forms.
High signal to noise ratio and high resolution have been the goal of remote sensing. Since the classical electromagnetic wave is influenced by the diffraction limit and quantum noise limit, increasing the resolution has been close to the limit of remote sensing, In this situation, in 14 years, the author through quantum remote sensing based theory, scientific experiment and the key technology research of the three phases, before the end of December 2014 completed the study of quantum remote sensing principle prototype. Quantum remote sensing prototype is based on the theory of quantum optics, which takes manipulation, preparation and control in quantum optical field as the experimental method. Through the experiment, the results obtained are the coherent light detection imaging resolution 2-3 times. Based on a large number of experimental studies, we completed the key technology of quantum remote sensing principle prototype, scheme design and principle prototype system. Through the test, the technical indicators of the principle prototype meet the requirements, which provide technical foundation for quantum remote sensing engineering principle prototype.
High resolution, high signal-to-noise ratio and high sensitivity have always been the goals and technical bottlenecks of detection, precision measurement and imaging. Quantum detection technology is one of the disruptive cutting-edge technologies in the world. Quantum information technology is introduced into the field of classical detection, hoping to solve the difficult technical bottleneck on the basis of classical physics. Compared with traditional detection methods, quantum detection has higher sensitivity, can receive weaker signals, requires lower transmission power, and has stronger anti-interference ability. In terms of precision measurement, the characteristics of quantum mechanics are used to make the measurement accuracy break through the classical physical limit, and then improve the measurement accuracy of the detection system. But with the development of remote sensing technology and people demand for long distance detection, we completed in the early completed close quantum detection, combined with remote sensing technology, the quantum squeezed light into the receiving system, using quantum phase-free amplification technology, make up for the low efficiency of the detector, make its imaging results close to the ideal detector. We designed a set of quantum squeezing light preparation, emission /receiving system, quantum enhancement module, quantum imaging system, balance homodyne detection system, data processing system, central control system in one of the remote quantum infrared detector, effective detection distance up to 100 meters, at the same time achieve high resolution imaging, the same environment and classical laser imaging resolution increased by 1 to2 times. In March 2000, Professor Siwen Bi conducted the exploration and research on quantum remote sensing. At the beginning of 2001, Professor Siwen Bi first put forward the concept of quantum remote sensing at home and abroad. In the past 20 years, through three stages of basic theoretical scientific experiments and key technologies, we have overcome many difficulties in theoretical research scientific experiments and key technologies ,and achieved breakthrough progress and innovative results, which have laid a key foundation for the follow-up quantum laser radar quantum remote sensing products.
Remote sensing is an advanced technology to explore the space and acquire earth-space information, with its accurate, comprehensive and dynamic detection and observation ability, RS plays an key role in earth observation, national defense, aerospace and deep space exploration. The advancement of science and urgent demands in economy and other fields put forward higher requirements for RS. Firstly, some important theoretical issues need to be addressed, such as RS information theory, spectral imaging mechanism, electromagnetic radiation transmission model. Secondly, the resolution power of RS instruments and their ability to utilize information needs to be improved. Finally, more detailed and richer RS information is needed during application. Of all these requirements, higher resolution, spectrum resolution, time resolution and further applications of RS are extremely important. While quantum remote sensing (QRS) performs very well in these aspects. QRS study was began in March, 2000, the concept was proposed in early 2001, then QRS technology researches began. The paper firstly introduces its background, concept and research status, its differences and advantages. Then it elaborates QRS research theoretical basis, information mechanism, quantum spectrum imaging research progress of QRS imaging processing. Besides, it emphasizes QRS imaging experimental process, based on which, technical solutions and design of satellite borne QRS active imaging technology and quantum laser radar engineering prototype were proposed, providing technical basis for their application. QRS imaging technology can significantly improve the signal-to-noise ratio and space resolution. Finally, the paper summarizes the researches over the past nineteen years and plans for the future.
Based on the requirements of project assignment, the paper firstly introduces the needs for principle prototype, and its overall technical solutions, assignment analysis and requirement index. Then it elaborates key technical solutions, prototype technical plan, as well as project design and production of its components, besides, we also developed testing device for debugging and testing needs, when the components design is completed, we conducted components alignment and testing, overall testing, obtaining noise squeezing degree （dB）of quantum squeezed field by principle prototype ≥ 6.4 dB, and the resolution higher than 0.2 mm @ 0.5m. We met the index requirements of principle prototype and realized high resolution imaging, providing significant basis for the following relative projects and for the development of new remote sensing technology with high performance.
Quantum spectral imaging is based on the EPR experiment and analysis. Its basic theory is quantum mechanics. it is completely different from the electromagnetic wave spectrum imaging theory(i.e. classical spectral imaging theory) that follows the Maxwell equation. Quantum spectral imaging is much better than the classical spectral imaging in time resolution, radiation resolution, spatial resolution and the sensitivity of the instrument. Theory and technology of quantum spectral imaging is still in perfect, once perfected and successfully applied to the infrared guidance, will have significantly improved on guidance accuracy and distance, the infrared interference has great potential. In this paper, some suppositions of the quantum imaging which is applied to infrared guidance system are briefly stated and discussed.