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Antenna Performance in LMR Systems Using PL Tone Analysis
Edité par
LAP LAMBERT Academic Publishing Apr 2014, 2014
ISBN 10 : 3659527173
ISBN 13 : 9783659527173
Neuf
Taschenbuch
Vendeur : BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Allemagne
Évaluation du vendeur 5 sur 5 étoiles
Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The in situ or on-site measurement of antenna performance is very challenging in analog Land Mobile Radio (LMR) FM systems. It turns out that the conventional antenna gain measurement techniques are hard and also not quite relevant for understanding the in situ performance. In this work, we present a a novel approach for directly measuring the in situ performance of antennas in analog LMR systems.The procedure involves receiving an FM signal simultaneously using the antenna under test (AUT) and a reference antenna. Both received signals are demodulated to audio using separate but identical receivers. Then a convenient method for characterizing the audio signal quality is to analyze the private line (PL) tone. The PL tone signal-to-noise ratio (SNR) is calculated by measuring the power of the tone relative to the sub-audio noise power. The PL tone SNR for both antenna systems is compared as it provides a 'bottom line' evaluation of the antenna performance. The audio SNR can also be mapped to RF SNR using a theoretical method. From simulation and experimental studies, we conclude that the estimate RF SNR is within 0.5 dB of the actual value for RF SNR values between +3 and +36 dB. 92 pp. Englisch. N° de réf. du vendeur 9783659527173
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Antenna Performance in LMR Systems Using PL Tone Analysis
ISBN 10 : 3659527173
ISBN 13 : 9783659527173
Neuf
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Vendeur : Books Puddle, New York, NY, Etats-Unis
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Etat : New. N° de réf. du vendeur 26404341756
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Antenna Performance in LMR Systems Using PL Tone Analysis
ISBN 10 : 3659527173
ISBN 13 : 9783659527173
Neuf
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Vendeur : Majestic Books, Hounslow, Royaume-Uni
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Etat : New. Print on Demand. N° de réf. du vendeur 409893923
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Antenna Performance in LMR Systems Using PL Tone Analysis
ISBN 10 : 3659527173
ISBN 13 : 9783659527173
Neuf
Couverture souple
Vendeur : Biblios, Frankfurt am main, HESSE, Allemagne
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Etat : New. PRINT ON DEMAND. N° de réf. du vendeur 18404341750
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Antenna Performance in LMR Systems Using PL Tone Analysis
Edité par
LAP LAMBERT Academic Publishing Apr 2014, 2014
ISBN 10 : 3659527173
ISBN 13 : 9783659527173
Neuf
Taschenbuch
Vendeur : buchversandmimpf2000, Emtmannsberg, BAYE, Allemagne
Évaluation du vendeur 5 sur 5 étoiles
Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -The in situ or on-site measurement of antenna performance is very challenging in analog Land Mobile Radio (LMR) FM systems. It turns out that the conventional antenna gain measurement techniques are hard and also not quite relevant for understanding the in situ performance. In this work, we present a a novel approach for directly measuring the in situ performance of antennas in analog LMR systems.The procedure involves receiving an FM signal simultaneously using the antenna under test (AUT) and a reference antenna. Both received signals are demodulated to audio using separate but identical receivers. Then a convenient method for characterizing the audio signal quality is to analyze the private line (PL) tone. The PL tone signal-to-noise ratio (SNR) is calculated by measuring the power of the tone relative to the sub-audio noise power. The PL tone SNR for both antenna systems is compared as it provides a 'bottom line' evaluation of the antenna performance. The audio SNR can also be mapped to RF SNR using a theoretical method. From simulation and experimental studies, we conclude that the estimate RF SNR is within 0.5 dB of the actual value for RF SNR values between +3 and +36 dB.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 92 pp. Englisch. N° de réf. du vendeur 9783659527173
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Image fournie par le vendeur
Antenna Performance in LMR Systems Using PL Tone Analysis
Edité par
LAP LAMBERT Academic Publishing
ISBN 10 : 3659527173
ISBN 13 : 9783659527173
Neuf
Taschenbuch
Vendeur : AHA-BUCH GmbH, Einbeck, Allemagne
Évaluation du vendeur 5 sur 5 étoiles
Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The in situ or on-site measurement of antenna performance is very challenging in analog Land Mobile Radio (LMR) FM systems. It turns out that the conventional antenna gain measurement techniques are hard and also not quite relevant for understanding the in situ performance. In this work, we present a a novel approach for directly measuring the in situ performance of antennas in analog LMR systems.The procedure involves receiving an FM signal simultaneously using the antenna under test (AUT) and a reference antenna. Both received signals are demodulated to audio using separate but identical receivers. Then a convenient method for characterizing the audio signal quality is to analyze the private line (PL) tone. The PL tone signal-to-noise ratio (SNR) is calculated by measuring the power of the tone relative to the sub-audio noise power. The PL tone SNR for both antenna systems is compared as it provides a 'bottom line' evaluation of the antenna performance. The audio SNR can also be mapped to RF SNR using a theoretical method. From simulation and experimental studies, we conclude that the estimate RF SNR is within 0.5 dB of the actual value for RF SNR values between +3 and +36 dB. N° de réf. du vendeur 9783659527173
Acheter neuf
EUR 54,90
Expédition à EUR 60,78
Expédition depuis Allemagne vers Etats-Unis
Expédition depuis Allemagne vers Etats-Unis
Quantité disponible : 1 disponible(s)