In the last century the laser was invented in 1961 after that scientists aspired to produce a hig... more In the last century the laser was invented in 1961 after that scientists aspired to produce a high-power laser (HPL) to be used in many fields as communications in a far-field, and for industrial purposes such as carving, cutting, and leveling, and in military applications, a super-powerful laser is used to destroy different enemy targets After several attempts and painstaking experiments, more than one conception was reached to reach a high-power laser, the first of which is the chemical laser, for example, the carbon dioxide laser, the carbon monoxide laser, the hydrogen and fluorine laser, the second type free-electron laser, and finally fiber laser. in this paper a chamber test of a high-power fiber laser beam (CTHPF) measures the absorption and scattering of the laser beam in a case almost real in the far-field, it simulates atmospheric aerosol and the effect of the laser beam after chamber on the piece of solid material like stainless steel and aluminum to measure heat capacities (HC) with a versus temperature (T), which its Produced by the laser beam.
2021 International Telecommunications Conference (ITC-Egypt), 2021
In the last century the laser was invented in 1961 after that scientists aspired to produce a hig... more In the last century the laser was invented in 1961 after that scientists aspired to produce a high-power laser (HPL) to be used in many fields as communications in a far-field, and for industrial purposes such as carving, cutting, and leveling, and in military applications, a super-powerful laser is used to destroy different enemy targets After several attempts and painstaking experiments, more than one conception was reached to reach a high-power laser, the first of which is the chemical laser, for example, the carbon dioxide laser, the carbon monoxide laser, the hydrogen and fluorine laser, the second type free-electron laser, and finally fiber laser. in this paper a chamber test of a high-power fiber laser beam (CTHPF) measures the absorption and scattering of the laser beam in a case almost real in the far-field, it simulates atmospheric aerosol and the effect of the laser beam after chamber on the piece of solid material like stainless steel and aluminum to measure heat capacities (HC) with a versus temperature (T), which its Produced by the laser beam.
High Speed Maneuvering Dim Target (HSMDT) detection is the challenging problem in pulsed monostat... more High Speed Maneuvering Dim Target (HSMDT) detection is the challenging problem in pulsed monostatic airborne radar, especially under jamming and clutter conditions, the problem is not only how to remove clutter and jamming but also when we detect the HSMDT using the airborne radar the range migration and Doppler estimation problems appeared and needed to be compensated. In this paper a new hybrid technique using Optimum Space Time Adaptive Processing (OSTAP), Second Order Keystone Transform (SOKT), and the Improved Fractional Radon Transform (IFrRT) is proposed, where the STAP is used as anti-jamming and clutter rejection method, the SOKT corrects the range curvature and part of the range walk, and the IFrRT is applied to estimate the target' radial acceleration and correct the residual range walk. The simulation demonstrates the validity of the proposed algorithm by calculating the probability of detection for the proposed algorithm and comparing it with the traditional methods, it shows that the new approach increased effectively the probability of detection, and also overcome the limitation of Doppler frequency ambiguity.
International Journal of Electronics, Dec 10, 2015
ABSTRACT The limited input dynamic power range of the radar receiver and the power loss due to th... more ABSTRACT The limited input dynamic power range of the radar receiver and the power loss due to the targets’ ranges are two potential problems in the radar receivers. This paper proposes a model based on the time-varying gain amplifier (TVGA) to compensate the power loss from the targets’ ranges, and using the negative impedance compensation technique to enhance the TVGA linearity based on Volterra series. The simulation has been done based on adaptive sweep optimisation (ASO) using advanced design system (ADS) and Matlab. It shows that the suppression of the third-order intermodulation products (IMR3) was carried out for two-tone test, the high-gain accuracy improved by 3 dB, and the high linearity IMR3 improved by 14 dB. The monostatic radar system was tested to detect three targets at different ranges and to compare its probability of detection with the prior models; the results show that the probability of detection has been increased for ASO/TVGA.
Nowadays there are a huge progress in the Electro-optical System and the Laser weapon, not only w... more Nowadays there are a huge progress in the Electro-optical System and the Laser weapon, not only were danger of laser weapons on the war but also civilian target. The laser warning receiver system can detect, classify, identify and give warning of the hostel laser threat aiming in a very short time with high sensitivity and it can activate the electro-optical counter measurement system, directly or with the user. In this paper we do a design and implementation for laser warning system circuit, the new purpose circuit increase the performance of the warning system and increase the detection field of view.
Observing human breathing activity has several basic applications in different areas of life. Acc... more Observing human breathing activity has several basic applications in different areas of life. Accurate detection of breathing is critical in the research of regular respiratory of the athletes, detection of drug addicts, and detection of the blood nitrogen ratio of divers and many other areas. Technically this process is difficult due to changes in breathing and other factors. This paper presents and proposes a strategy to design a quantitative respiratory gas analyzer with sensors based on microcontrollers through a fuzzy logic model. The proposed system uses five sensors that will detect different gases such as methane, alcohol, natural gas, carbon monoxide, and hydrogen. These sensors detect the concentration of gases. If the gas concentration is above the permissible exposure limit (PEL), the predefined user will be notified of the gas leak situation. Five groups were formed, each group consists of 40 people so that each group is exposed daily to a type of gases measured by the designed and implemented device. The design is implemented using a microcontroller (ATmega328P); for its lower cost and high efficiency. In our research, the main goal is to obtain the highest-level result in determining the amount of gas in the blood by breathing. Generally, accurate detection of breathing is critical in the search for the regular respiratory system of athletes, drivers, and aviation personnel who are constantly exposed to the gas. This research contributes to providing a low-cost, high-quality portable measurement system and using a new strategy to measure the proportion of gases measured in the blood and to determine an initial diagnosis using the fuzzy logic model. This portable system can be used in homes, hospitals, and tests for drivers, nurses, and pilots.
In the last century the laser was invented in 1961 after that scientists aspired to produce a hig... more In the last century the laser was invented in 1961 after that scientists aspired to produce a high-power laser (HPL) to be used in many fields as communications in a far-field, and for industrial purposes such as carving, cutting, and leveling, and in military applications, a super-powerful laser is used to destroy different enemy targets After several attempts and painstaking experiments, more than one conception was reached to reach a high-power laser, the first of which is the chemical laser, for example, the carbon dioxide laser, the carbon monoxide laser, the hydrogen and fluorine laser, the second type free-electron laser, and finally fiber laser. in this paper a chamber test of a high-power fiber laser beam (CTHPF) measures the absorption and scattering of the laser beam in a case almost real in the far-field, it simulates atmospheric aerosol and the effect of the laser beam after chamber on the piece of solid material like stainless steel and aluminum to measure heat capacities (HC) with a versus temperature (T), which its Produced by the laser beam.
2021 International Telecommunications Conference (ITC-Egypt), 2021
In the last century the laser was invented in 1961 after that scientists aspired to produce a hig... more In the last century the laser was invented in 1961 after that scientists aspired to produce a high-power laser (HPL) to be used in many fields as communications in a far-field, and for industrial purposes such as carving, cutting, and leveling, and in military applications, a super-powerful laser is used to destroy different enemy targets After several attempts and painstaking experiments, more than one conception was reached to reach a high-power laser, the first of which is the chemical laser, for example, the carbon dioxide laser, the carbon monoxide laser, the hydrogen and fluorine laser, the second type free-electron laser, and finally fiber laser. in this paper a chamber test of a high-power fiber laser beam (CTHPF) measures the absorption and scattering of the laser beam in a case almost real in the far-field, it simulates atmospheric aerosol and the effect of the laser beam after chamber on the piece of solid material like stainless steel and aluminum to measure heat capacities (HC) with a versus temperature (T), which its Produced by the laser beam.
High Speed Maneuvering Dim Target (HSMDT) detection is the challenging problem in pulsed monostat... more High Speed Maneuvering Dim Target (HSMDT) detection is the challenging problem in pulsed monostatic airborne radar, especially under jamming and clutter conditions, the problem is not only how to remove clutter and jamming but also when we detect the HSMDT using the airborne radar the range migration and Doppler estimation problems appeared and needed to be compensated. In this paper a new hybrid technique using Optimum Space Time Adaptive Processing (OSTAP), Second Order Keystone Transform (SOKT), and the Improved Fractional Radon Transform (IFrRT) is proposed, where the STAP is used as anti-jamming and clutter rejection method, the SOKT corrects the range curvature and part of the range walk, and the IFrRT is applied to estimate the target' radial acceleration and correct the residual range walk. The simulation demonstrates the validity of the proposed algorithm by calculating the probability of detection for the proposed algorithm and comparing it with the traditional methods, it shows that the new approach increased effectively the probability of detection, and also overcome the limitation of Doppler frequency ambiguity.
International Journal of Electronics, Dec 10, 2015
ABSTRACT The limited input dynamic power range of the radar receiver and the power loss due to th... more ABSTRACT The limited input dynamic power range of the radar receiver and the power loss due to the targets’ ranges are two potential problems in the radar receivers. This paper proposes a model based on the time-varying gain amplifier (TVGA) to compensate the power loss from the targets’ ranges, and using the negative impedance compensation technique to enhance the TVGA linearity based on Volterra series. The simulation has been done based on adaptive sweep optimisation (ASO) using advanced design system (ADS) and Matlab. It shows that the suppression of the third-order intermodulation products (IMR3) was carried out for two-tone test, the high-gain accuracy improved by 3 dB, and the high linearity IMR3 improved by 14 dB. The monostatic radar system was tested to detect three targets at different ranges and to compare its probability of detection with the prior models; the results show that the probability of detection has been increased for ASO/TVGA.
Nowadays there are a huge progress in the Electro-optical System and the Laser weapon, not only w... more Nowadays there are a huge progress in the Electro-optical System and the Laser weapon, not only were danger of laser weapons on the war but also civilian target. The laser warning receiver system can detect, classify, identify and give warning of the hostel laser threat aiming in a very short time with high sensitivity and it can activate the electro-optical counter measurement system, directly or with the user. In this paper we do a design and implementation for laser warning system circuit, the new purpose circuit increase the performance of the warning system and increase the detection field of view.
Observing human breathing activity has several basic applications in different areas of life. Acc... more Observing human breathing activity has several basic applications in different areas of life. Accurate detection of breathing is critical in the research of regular respiratory of the athletes, detection of drug addicts, and detection of the blood nitrogen ratio of divers and many other areas. Technically this process is difficult due to changes in breathing and other factors. This paper presents and proposes a strategy to design a quantitative respiratory gas analyzer with sensors based on microcontrollers through a fuzzy logic model. The proposed system uses five sensors that will detect different gases such as methane, alcohol, natural gas, carbon monoxide, and hydrogen. These sensors detect the concentration of gases. If the gas concentration is above the permissible exposure limit (PEL), the predefined user will be notified of the gas leak situation. Five groups were formed, each group consists of 40 people so that each group is exposed daily to a type of gases measured by the designed and implemented device. The design is implemented using a microcontroller (ATmega328P); for its lower cost and high efficiency. In our research, the main goal is to obtain the highest-level result in determining the amount of gas in the blood by breathing. Generally, accurate detection of breathing is critical in the search for the regular respiratory system of athletes, drivers, and aviation personnel who are constantly exposed to the gas. This research contributes to providing a low-cost, high-quality portable measurement system and using a new strategy to measure the proportion of gases measured in the blood and to determine an initial diagnosis using the fuzzy logic model. This portable system can be used in homes, hospitals, and tests for drivers, nurses, and pilots.
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Papers by Amir Almslmany