Transcript

1

2

3

4

5

6

7

8 [1]

9 2]

10 [2]3] [4]

11

12 5] [6]

13 6] o o o

14 SEGNALE RICEVUTO DAL TAG E DAL READER IN dbm Distanza [m] TR RT TR RT TR RT TR RT O V Distanza [m] TR RT TR RT TR RT TR RT O V SEGNALE RICEVUTO DAL TAG E DAL READER IN dbm ANTENNA E LATO COMPONENTI RIVOLTI VERSO IL READER Distanza [m] TR RT TR RT TR RT TR RT O V

15

16

17

18 o

19

20

21

22

23 SEGNALE RICEVUTO DAL TAG E DAL READER TAG # 33 (recuperato) 35 cm TR [dbm] RT [dbm] Distanza H antenna Direz. Prof. TAG Reader to reader (cm) Antenna (cm) TAG (m) ORA ,5 120 O 35 10: O 35 10: V 35 10: O 35 10: ,5-10 O 35 10:39 TAG # 33 (recuperato) 80 cm TR [dbm] RT [dbm] Distanza H antenna Direz. Prof. TAG Reader to reader (cm) Antenna (cm) TAG (m) ORA O 80 11: O 80 11: ,5 150 O 80 11: ,5-10 V 80 11: ,5 0 O 80 11: ,5-50 V 80 11: O 80 11:26 Distanza TAG # 99 TR [dbm] RT [dbm] Reader to ORA TAG (m) H antenna reader (cm) Direz. Antenna Prof. TAG (cm) O : cm ,5 110 O : ,5-10 O : ,5-70 O :03 GPS UTM ED ,5-70 V :05 non rilevato ,5-70 V :06 1,5 m SE da TAG# O :09 TAG # 44 TR [dbm] RT [dbm] Reader to ORA 540 cm GPS UTM ED50 32T TAG (m) O : O : ,5-80 O :42 NOTE: 90 cm di neve ributtata Distanza H antenna reader (cm) Direz. Antenna Prof. TAG (cm)

24

25

26 [7] 8] [9] 10][11]

27 [12]

28

29

30

31 VSWR1 VSWR

32 P r P t FSPL1 AS 2 1Na Snow 2 1 SI 2 1N Ice 2 1 IC 2 1 CA 2 FreeSpacePathLossFSLPG t t, t G r r, r 1 t 2 1 r 2 4d 2 t r 2 [9] N 1000loge c 0 [13] [14] P r P t e cdt e cdr D t t, t D r r, r 1 t 2 1 r 2 4d 2 t r 2 t r 2 e cdd, [15]

33 P r G P t t, t G r r, r 1 t 2 1 r 2 t 4d 2 t r 2 P r P t G 0t G 0r 1 t 2 1 r 2 4d 2 P r P tg0tg0r10log 1 t 2 1 r 2 20log dbm dbm dbi dbi 4 20logd P r P t2g 20log dbm dbm db 4 20logd 0210log12 Z Z L 0, dB Z L Z 1 2 0,611 2,14dB

34 20logd P r Pt2G dbm dbm db [16] [16] [17]

35

36

37 [18]

38

39 z x y x y z z y x

40 φ x y z z θ [19] [14]

41 P r P t e cdt e cdr D t t, t D r r, r 1 t 2 1 r 2 4d 2 t r 2 P r P t 4d 2 e cdt e cdr D t t, t D r r, r 1 t 2 1 r 2 t r 2 P r r, r P t 4d 2 G A r, r G A r, r P dbm r r, r P dbm t 20log 4 20logd

42

43

44

45

46

47 G A r, r P dbm r r, r P 20log 4 dbm t 20logd Delta Gain [db] Errore d MAX [m] Azimuth POL V Elevazione POL V Azimuth POL O Elevazione POL O

48 y α

49 Tipo di Polariz. Αlfa [deg] Pr [dbm] Ab. G [db] MAX GAIN MIN GAIN deg deg

50 BINDER MKF115 Sensore PT1000 C RH ADC C [ C] Errore Sistematico 17, ,48 0,48 10,0 90% ,74 0,74 5,0 87% ,83 0,83 0,0 88% ,92 0,92-5,0 83% ,11 0,89-10,0 77% ,07 0,93-15,0 76% ,07 0,93-19,9 76% ,97 0,93

51

52

53

54 [20] [21]

55

56

57 [22]

58

59

60

61

62

63 WP Descrizione

64 WP Descrizione WP Descrizione

65 [1] P. A. Shumskiy, "Density of glacier ice," Journal of Glaciology, vol. 13, no. 27, pp , 1960,. J. of 13, 1960, 27:. [2] Paolo Arcioni, "I principi del riscaldamento dielettrico," in La tecnologia a microonde e l'innovazione industriale. Giornata di studio presso l'università di Modena, 15 marzo 2002, [3] SAGOM SRL. (N.D., N.D.) Caratteristiche tecniche del NYLON PA.6 (Standard DIN 53483). [Online]. [4] S.Bri N. Jebbor, "Finite-Element Modeling Method for the Prediction of the Effective Permittivity of Random Composite Materials," International journal of advanced scientific and technical research, vol. 6, no. 2, pp , December 2012, [5] Texas Instruments. (2010, June) Design Note DN RSSI interpretation and timing. [Online]. [6] CTIA - The Wireless Association, "Test Plan for Mobile Station Over the Air Performance - Method of Measurement for Radiated RF Power and Receiver Performance," CTIA Certification - The Wireless Association, Washington, Technical Standard Rev3.1, [7] Fondazione Montagna Sicura, Stratigrafia neve a Punta Helbronner, Oct. 18, 2013, Coordinate UTM ED50: [8] Alberto Godio, "Georadar Measurements for the Snow Cover Density," American Journal of Applied Sciences, vol. 6, no. 3, pp , Mar [9] K. Matsuoka, J.A. MacGregor, and F. Pattyn, "Using englacial radar attenuation to better diagnose the subglacial environment: A review," in 13th International conference on Ground Penetration Radar (GPR), Lecce, 2010, pp [10] S. Evans, "Dielectric properties of ice and snow-a review," Journal of Glaciology, vol. 5, no. 42, pp , [11] I. Fofana and H. Hemmatjou M. Farzaneh, "Electrical Properties of Snow," IEEE/CEIDP 2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, Boulder, Technical Report [12] Texas Instruments. (2009, June) Application Note AN068 - Adapting TI LPRF Reference Designs for Layer Stacking. [Online]. [13] R. Steven Best, "Small Antennas," in Antenna Engineering Handbook, Fourth Edition.: McGraw-Hill, 2007, pp [14] Constantine A. Balanis, Antenna Theory, Analysis and Design, Third Edition ed. New Jersey, USA: Wiley, [15] IEEE Antenna and Propagation Society, "IEEE Standard Definition of Terms for Antennas," Institute of Electrical and Electronics Engineers, New York, Standard Definition IEEE Std (R2004), [16] Texas Instruments. (2010, Aug.) Design Note DN031 - CC-Antenna-DK and Antenna Measurements Summary. [Online]. [17] Texas Instruments. (2010, July) Antenna Kit - DN612, board 16 at 315 MHZ. [Online]. [18] IEEE Antenna and Propagation Society, "IEEE Standard Test Procedures for Antennas," Institute of Electrical and Electronics Engineers, New York, Standard Definition IEEE Std (R2008), [19] GNU Project. (2013, Dec.) GNU Octave. [Online].

66 [20] Associazione Interregionale Neve e Valange. (2014, Feb.) AINEVA. [Online]. [21] Testo SpA. (2013, -) Termometro NTC a 1 canale. [Online]. [22] M. Maggioni, G. Filippa, E. Zanini, M. Freppaz, "Analysis of continuous snow temperature profiles from automatic weather stations in Aosta Valley (NW Italy)", Proceedings, 2012 International Snow Science Workshop, Anchorage, Alaska.