ILLUSTRATIONS - TR00-50006
INTRODUCTION - TR00-50007
Figure 1. Location of the 40-acre site at Jefferson Proving Ground.
DIELECTRIC THEORY
Field profiling
RESULTS AND DISCUSSION - TR00-50011
Figure 3. Distributions at the 40-acre site with radar profile transects superimposed.
Figure 4. 300- (left) and 600- (right) MHz diffraction profiles and waveform responses to a metal disk buried 58 cm deep
Figure 5 (cont'd). Soil moisture pro- files at five locations
Figure 5 (cont'd). Soil moisture pro- files at five locations
Figure 6. Sample segment of a 300-MHz profile (top) and the result of applying a background removal filter (bottom)
Figure 6. Sample segment of a 300-MHz profile (top) and the result of applying a background removal filter (bottom) - continued - TR00-50017
Figure 6. Sample segment of a 300-MHz profile (top) and the result of applying a background removal filter (bottom) - continued - TR00-50018
Figure 8. Likely interpretations for two of the responses in Figure 7.
Figure 9. Selected target responses within segments extracted from the 600-MHz profiles, and sample traces containing wavelets. The penetration of this frequency is about 1 m.
Figure 10. Distribution of ε′ at both 300 (black) and 600 MHz (grey).
Figure 11. Dielectric permittivity curves and attenuation rates for the average ε′, range of σ, and probable values of frel and εoo at JPG
Figure 12. Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured
Figure 12. Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured - continued - TR00-50024
Figure 12. Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured - continued - TR00-50025
Figure 12 (cont'd). Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured.
Figure 13. Radiation beamwidths for a model of our antennas and the average ε′ = 10.4 found at JPG
INCIDENT FIELD AND POLARIZATION PARAMETERS
Figure 14. Basic setup, with target below ground surface, in its reference ori
Figure 15. Normalized scattered electric field above a projectile surrounded by soil and oriented in the Y direction, as a function of frequency
Figure 16. Normalized scattered E field above target for various projectile inclinations and rotations θd, θx.
Figure 18. Backscattered Ez field magnitudes along transect, at various frequencies, when the projectile is inclined at 45 with nose up (θd = 225, θx = 0), and the antenna is rotated θa = 45.
Figure 19. Backscattered Ez field magnitudes along transect, at various frequencies, when the projectile is inclined at 45 with nose down (θd = 45, θx = 0), and the antenna is rotated θa = 45.
CONCLUSIONS AND RECOMMENDATIONS - TR00-50034
Figure 20. Scattered |Ez| values, when the incidence direction and incident E field orientations are in the (x,z) plane, for various incidence angles.
LITERATURE CITED - TR00-50036
LITERATURE CITED - continued - TR00-50037
REPORT DOCUMENTATION PAGE - TR00-50038
TR00-5
INTRODUCTION - TR00-50007
Figure 1. Location of the 40-acre site at Jefferson Proving Ground.
DIELECTRIC THEORY
Field profiling
RESULTS AND DISCUSSION - TR00-50011
Figure 3. Distributions at the 40-acre site with radar profile transects superimposed.
Figure 4. 300- (left) and 600- (right) MHz diffraction profiles and waveform responses to a metal disk buried 58 cm deep
Figure 5 (cont'd). Soil moisture pro- files at five locations
Figure 5 (cont'd). Soil moisture pro- files at five locations
Figure 6. Sample segment of a 300-MHz profile (top) and the result of applying a background removal filter (bottom)
Figure 6. Sample segment of a 300-MHz profile (top) and the result of applying a background removal filter (bottom) - continued - TR00-50017
Figure 6. Sample segment of a 300-MHz profile (top) and the result of applying a background removal filter (bottom) - continued - TR00-50018
Figure 8. Likely interpretations for two of the responses in Figure 7.
Figure 9. Selected target responses within segments extracted from the 600-MHz profiles, and sample traces containing wavelets. The penetration of this frequency is about 1 m.
Figure 10. Distribution of ε′ at both 300 (black) and 600 MHz (grey).
Figure 11. Dielectric permittivity curves and attenuation rates for the average ε′, range of σ, and probable values of frel and εoo at JPG
Figure 12. Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured
Figure 12. Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured - continued - TR00-50024
Figure 12. Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured - continued - TR00-50025
Figure 12 (cont'd). Model 400-MHz wavelets before and after round-trip propagation within 1 m of ground characterized by the soil parameters measured.
Figure 13. Radiation beamwidths for a model of our antennas and the average ε′ = 10.4 found at JPG
INCIDENT FIELD AND POLARIZATION PARAMETERS
Figure 14. Basic setup, with target below ground surface, in its reference ori
Figure 15. Normalized scattered electric field above a projectile surrounded by soil and oriented in the Y direction, as a function of frequency
Figure 16. Normalized scattered E field above target for various projectile inclinations and rotations θd, θx.
Figure 18. Backscattered Ez field magnitudes along transect, at various frequencies, when the projectile is inclined at 45 with nose up (θd = 225, θx = 0), and the antenna is rotated θa = 45.
Figure 19. Backscattered Ez field magnitudes along transect, at various frequencies, when the projectile is inclined at 45 with nose down (θd = 45, θx = 0), and the antenna is rotated θa = 45.
CONCLUSIONS AND RECOMMENDATIONS - TR00-50034
Figure 20. Scattered |Ez| values, when the incidence direction and incident E field orientations are in the (x,z) plane, for various incidence angles.
LITERATURE CITED - TR00-50036
LITERATURE CITED - continued - TR00-50037
REPORT DOCUMENTATION PAGE - TR00-50038
TR00-5