Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 6 of 6
Full-Text Articles in Engineering
Design Of A Reliable Remote Surface Detector Based On Ultrasonic Pulse-Transit Technique To Detect Uneven & Non-Smooth Porous Snow Surfaces, Raman Attri
Raman K. Attri
This paper discusses design control techniques used to design ultrasonic pulse echo method based remote surface detector to detect objects with porous, un-even, irregular surfaces like snow. For such surfaces there is ample possibility of scatter of reflected beam in multiple directions, absorption of ultrasonic energy within the pores and reflected energy too feeble to detect. In some cases the reflected beam may altogether miss the receiver resulting in no surface detection at all. Scatter and penetration of ultrasonic energy at such irregular porous uneven surfaces poses great difficulties in designing a reliable Remote Surface detector. In this paper, we …
Design Of Stable Narrow Band-Pass Filter Using Multi-Stage Biquad Topology, Raman Attri
Design Of Stable Narrow Band-Pass Filter Using Multi-Stage Biquad Topology, Raman Attri
Raman K. Attri
Band pass filtering techniques have been a challenging task due to requirement of keeping Quality factor, gain and mid-frequency of the filter independent of each other. Other most important aspect is keeping the filter stable, keeping mid-frequency immune to circuit component tolerances and to achieve the mid-frequency at the accurate value. The Biquad family of topologies are typically used for a stabilized filtering application, however the design requirements on Biquad topology for low frequency application is still a challenge. The requirements become more stringent for bandwidth curve, roll-off curve and preciseness of frequency filtering as we move down to low …
Practical Design Evaluation Of Extremely Narrow Band-Pass Filter Topologies, Raman K. Attri
Practical Design Evaluation Of Extremely Narrow Band-Pass Filter Topologies, Raman K. Attri
Raman K. Attri
Narrow Band pass filtering techniques have been a challenging task since the inception of audio and telecommunication applications. The challenge involves keeping Quality factor, gain and mid-frequency of the filter independent of each other. Other most important aspect is keeping the filter stable, keeping mid-frequency immune to circuit component tolerances and to achieve the mid-frequency at the accurate value. The requirements turns more stringent when working with low frequency Narrow band-pass filters where the shift in few Hz would cause great frequency errors. The selection of right topology for best performance is the key top successful design. This paper objectively …
Evaluation Of Single Op-Amp Topologies For Extremely Narrow Band-Pass Filter Design, Raman Attri
Evaluation Of Single Op-Amp Topologies For Extremely Narrow Band-Pass Filter Design, Raman Attri
Raman K. Attri
Narrow Band pass filtering techniques have been a challenging task since the inception of audio and telecommunication applications. The challenge involves keeping Quality factor, gain and mid-frequency of the filter independent of each other. Other most important aspect is keeping the filter stable, keeping mid-frequency immune to circuit component tolerances and to achieve the mid-frequency at the accurate value. The requirements turns more stringent when working with low frequency Narrow band-pass filters where even the shift in few Hz would cause great frequency errors. The selection of right topology for best performance is the key to successful design. This paper …
Design Analysis And Evaluation Of 1 And 2 Op-Amp Topology For Design Of Stable Narrow Band-Pass Filter, Raman K. Attri
Design Analysis And Evaluation Of 1 And 2 Op-Amp Topology For Design Of Stable Narrow Band-Pass Filter, Raman K. Attri
Raman K. Attri
Band pass filtering techniques have been a challenging task due to requirement of keeping Quality factor, gain and mid-frequency of the filter independent of each other. Other most important aspect is keeping the filter stable, keeping mid-frequency immune to circuit component tolerances and to achieve the mid-frequency at the accurate value. The requirements become more stringent for bandwidth curve, roll-off curve and preciseness of frequency filtering as we move down to low frequency applications where the shift in few Hz would cause great frequency errors.. This paper evaluate the performance of 1 and 2 op-amp topology if those can be …
Non-Contact Detection Techniques And Technologies For Detection Of Objects In Air, Under-Ground And Under-Water, Raman Attri
Non-Contact Detection Techniques And Technologies For Detection Of Objects In Air, Under-Ground And Under-Water, Raman Attri
Raman K. Attri
In this white paper, we will present review and compilation of various object detection techniques currently available in different scenarios and situations. Automatic Object detection in the air, beneath other materials, under water and under the earth surface as well as over the surface is one of the advanced sciences employing many principles of multiple engineering domains together. “See-through” methods – seeing beyond the visible objects, has been inherent desire of human being since the practice of science. Not only this, a craving to detect the objects without directly “seeing upon” them with naked eyes calls upon some automatic procedures …