徑向像散 的英文怎麼說
中文拼音 [jìngxiàngxiàngsǎn]
徑向像散
英文
radial astigmatism-
Synthetic aperture radar ( sar ) has been widely used in both military affairs and civilian fields because of its high - resolution, independence of both time and weather conditions, etc. usually, sar could only be used to detect and image static targets instead of moving targets for the reason that the position drifting will make local mistake in the general sar image, which is usually caused by the velocity of the moving targets in the ground range direction, and when it comes to the target with strong scatter coefficient right in the drifting position, the moving target could not be detected at all
合成孔徑雷達（ sar ）由於其高解析度、全天時、全天候等優良性能，已經在軍事和民用領域得到越來越廣泛的應用。通常，合成孔徑雷達只能對靜止目標進行檢測和成像，動目標由於其徑向速度而在常規sar圖像中有一個位置偏移，使成像造成局部錯誤，而且當偏移處有強散射目標時，動目標將無法檢測。軍事上的應用也要求合成孔徑雷達能對運動目標進行有效地檢測和成像，因而運動目標檢測（ mti ）及其成像日益成為合成孔徑雷達領域研究的一個熱點。Because of its ability not only to produce two - dimensional high resolution images of the scene illuminated, but also to measure complete complex scattering matrix for each resolution cell, and to operate under all weather conditions and all the time, day and night, a polarimetric synthetic aperture radar ( sar ) is playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers of the earth
極化合成孔徑雷達（ sar ）能夠通過照射場景，對場景進行二維（方位向和距離向）高分辨力成像，同時測量出每個分辨單元的復散射矩陣。由於極化合成孔徑雷達具行全天候和全氣候工作的能力，使得極化合成孔徑雷達在採集地表及其覆蓋物的物理（電結構）細節信息方面起著越來越重要的作用。This paper studies target detection algorithms using polarimetric one - dimension range profile. at first by exploiting polarimetric information in different polarization channels, a fused and enhanced one - dimension range profile is obtained by pwf. then we can detect radar target through integration of scatters in different resolution cells or the number of detected scattering points
首先利用不同極化通道的相關性信息，將各個極化通道的一維距離像通過極化白化濾波（ pwf ） ，抑制相關雜波，提高信雜比，融合得到一幅改善了的一維距離像，然後通過多個散射中心的能量徑向積累判定目標的有無。After analyzing the theory of target scattering and characters of hrrp, the approach of target recognition is presented, which is based on the statistical features of hrrp, including peak value, scale, radial energy accumulation variance, and fft - mdmt characters
在分析目標的散射機理以及高分辨一維距離像特性的基礎上，提出了一種基於目標距離像的峰值特徵、尺度特徵、徑向能量積累、方差特徵、 fft - mdmt特徵等五維距離像統計特徵的目標識別方法。分享友人