毫米波目标辐射亮温的极值解
Extremal solution of the target\s brightness temperature in millimeter wave radiometric measurements
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摘要: 毫米波近感技术是利用物体的毫米波辐射特性,探测识别目标的技术。它在许多领域有着重要作用。为在毫米波辐射探测中求得精确的真实目标亮温,必须建立天线电磁辐射与环境电磁辐射交会的数学模型。此是第一类病态 Fredholm积分方程,该文给出毫米波辐射计目标辐射亮温的极值解。Abstract: The near sensing techniques with millimeter wave play important role in many fields. To make precise measurements of the radiometric brightness temperature of a target, one must set up model of the interaction between the electromagnetic radiation properties of the antenna and the incident radiation from the environment. This interaction can be described by Fredholm integral equation of the first kind which is extremely unstable. In this paper, a inversion method is presented and is then applied to retrieve armored targets brightness temperature in millimeter wave radiometric measurements.
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J.T. Holmes, C. A. Balanis, W. M. Truman, Application of Fourier transforms for microwave radiometric inversions, IEEE Trans. on Antennas Propagat., 1975, AP-23(6), 797-806.[2]W. M. Truman C. A. Balanis, J. J. Holmes, Three-dimensional vector modeling and restoration of flat finite wave tank radiometric measurements, IEEE Trans. on Antennas Progagat., 1977,AP-25(1), 95-104.[3]A. Stogryn, Estimates of brightness temperatures from scanning radiometer data, IEEE Trans.on Antennas Progagat., 1978, AP-26(5), 720-726.[4]J.P. Claassn, A. K. Fung, The recovery of polarized apparent temperature distributions of flat scenes from antenna temperature measurements, IEEE Trans. on Antennas Progagat., 1974,AP-22(3), 433-442.[5]李兴国,毫米波近感技术及其应用,北京,国防工业出版社,1989,第二章. -
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