Millimeter wave isolation measurements of diagonal horns and tunnel antennas

Yowell, C.; Etcheverry, R.

doi:10.1109/aps.1974.1147261

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…At high frequencies, a small physical separation between antennas is equivalent to a large number of wavelengths and significant isolation exists; the small physical separation also closely approximates monostatic conditions. The isolation may be enhanced when absorber-lined tunnels surround the antennas [40]. When separate antennas achieve adequate isolation, broad-bandwidth measurements can be taken without adjusting of the nulling circuitry and without stringent frequency stability.…”

Section: Instrumentation Radarsmentioning

confidence: 99%

Radar cross section measurements

Dybdal

1987

Proc. IEEE

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The progress in radar cross section measurements is strongly related to the progress in radar technology. The recent acceleration in radar technology and processing techniques has generated a corresponding acceleration in interest for radar cross section measurements. Historically, early radar cross section measurements were performed to determine the detection range of radar systems, a fundamental objective that still exists. Later measurements, coupled with analytic techniques and computer codes, were performed to extend our understanding of the radar scattering process. At the present time, the availability of broad-band electronics, signal processing techniques, and digital technology results in radar cross section measurement programs which are directed toward exploring the performance of operational waveforms and processing, target discrimination, target detectability in clutter, and radar scattering control.The fundamentals of radar cross section measurements are reviewed. Measurement facilities, including the present research activities on compact range techniques, are then described. Instrumentation radars have benefited from both wide-bandwidth electronics and digital processing capabilities; Fourier transform techniques, in particular, provide both additional information on target scattering, and increase measurement accuracy by isolating the target from radar returns from the measurement facility. The frequency coverage has also extended to include millimeter-wave frequencies. Achievable accuracy is important in any measurement program, and those factors that limit the accuracy of radar cross section measurements are discussed.

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Section: Instrumentation Radarsmentioning

confidence: 99%

Radar cross section measurements

Dybdal

1987

Proc. IEEE

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“…to the instrumentation radar. While the choice of diagonal horns used in this system minimizes the coupling component7 and controls the sidelobe illumination of the radar's surroundings, the level of these components greatly exceeds the level of the signal components scattered by the target. However, the range separation of the isolation and scattering components is typically very small compared to the target's separation range, and thus these components are clustered about a zero-frequency return in the radar.…”

mentioning

confidence: 99%

High-Resolution Instrumentation Radar.

Dybdal¹,

Hurlbut²,

Mori³

1986

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Millimeter wave isolation measurements of diagonal horns and tunnel antennas

Cited by 2 publications

References 3 publications

Radar cross section measurements

Radar cross section measurements

High-Resolution Instrumentation Radar.

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