Rcs Prediction from Planar Near-field Measurements
نویسندگان
چکیده
It is well-known that, at low frequency, far-field RCS can be measured using a suitable implementation such as outdoor range or large anechoic chamber. The aim of this paper is to propose a new algorithm to predict RCS from near-field measurements. The comparison between RCS values obtained from the proposed method and those obtained from direct far-field values shows a good agreement between the two results.
منابع مشابه
Application of the Cosine Window Function with the Parameters Optimized by Genetic Algorithm in Bistatic Planar Near-field Scattering Measurements
The cosine window function with the parameters optimized by Genetic Algorithm (GA) is applied in bistatic planar nearfield scattering measurements so as to effectively improve the measurement precision. With the infinitely long ideal conductor cylinder as the target under test, the bistatic planar near-field scattering measurement technique is studied by the method of computer simulation and so...
متن کاملNear-Field to Far-Field Transformation Including the Effect of Ground Bounce
The far-field Radar Cross Section (RCS) measurement of the actual target requires a long measurement range, which can be realized in the outdoor site. One of the problems in outdoor measurement is the difficulty to avoid the effect of ground bounce. Some sites overcome the difficulty by the exploitation of the ground bounce in RCS measurement [1][2]. Meanwhile the RCS measurement of the large a...
متن کاملNear-field propagation of terahertz pulses from a large-aperture antenna.
The near-field propagation behavior of terahertz (THz) pulses generated by a planar large-aperture photoconducting THz transmitter has been characterized. A simulation model based on Huygens-Fresnel diffraction theory has been developed that permits accurate prediction of the spatiotemporal profiles of the THz beam everywhere and gives excellent agreement with experimental measurements. Two key...
متن کاملUwb Radar Holography Applied to Rcs Signature Reduction of Military Vehicles
Ultra wide band (UWB) radar hologmphy is a unique technique developed at PNNL for the U. S. Army to obtain nearfield "3-D" images and scattering characteristics of full-size vehicles in the field and at productwn line facilities. The extremely high-resolution imaging capability of this technique maps a vehicle's scattering areas and idenhfies the "hot spots" which dominate the far-field signatu...
متن کاملNear-field heat transfer in a scanning thermal microscope.
We present measurements of the near-field heat transfer between the tip of a thermal profiler and planar material surfaces under ultrahigh vacuum conditions. For tip-sample distances below 10(-8) m, our results differ markedly from the prediction of fluctuating electrodynamics. We argue that these differences are due to the existence of a material-dependent small length scale below which the ma...
متن کامل