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雷達海雜波:建模與目標檢測
第1章 緒論·································································································1
1.1 前言···································································································2 1.2 海上監(jiān)視雷達·······················································································2 1.3 海表面································································································3 1.4 海雜波特性··························································································4 1.5 海雜波建!ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ5 1.5.1 基于電磁散射的物理建!ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ6 1.5.2 基于海雜波觀測的經(jīng)驗建模·····························································7 1.6 數(shù)據(jù)集································································································7 1.6.1 Ingara X波段數(shù)據(jù)集·······································································7 1.6.2 CSIR X波段數(shù)據(jù)集········································································8 1.7 本書結(jié)構(gòu)·····························································································8 參考文獻····································································································9 第2章 單基地海雜波···················································································11 2.1 概述··································································································12 2.2 平均后向散射······················································································13 2.2.1 異常傳播····················································································15 2.2.2 多徑散射····················································································16 2.2.3 GO-SSA平均后向散射模型····························································19 2.3 幅度分布····························································································21 2.3.1 分布模型····················································································24 2.3.2 擬合案例····················································································30 2.3.3 等效形狀參數(shù)關(guān)系········································································31 2.4 海尖峰特性·························································································32 2.5 多普勒特性·························································································35 2.5.1 相干幅度統(tǒng)計特性········································································37 2.5.2 平均多普勒譜··············································································39 2.5.3 時變且隨距離變化的譜··································································40 2.6 紋理相關(guān)性·························································································43 參考文獻···································································································45 第3章 雙基地海雜波···················································································50 3.1 概述··································································································51 3.2 雙基地幾何結(jié)構(gòu)···················································································51 3.3 有源雙基地雷達···················································································54 3.3.1 海雜波測量·················································································54 3.3.2 平面內(nèi)反射系數(shù)測量·····································································56 3.3.3 平面外反射系數(shù)測量·····································································57 3.3.4 幅度統(tǒng)計特性··············································································59 3.3.5 相關(guān)性·······················································································60 3.3.6 多普勒譜····················································································61 3.3.7 海尖峰·······················································································63 3.4 無源雙基地雷達···················································································64 3.4.1 海雜波測量·················································································65 3.4.2 數(shù)據(jù)處理····················································································68 3.4.3 時延/多普勒域的幅度統(tǒng)計特性·······················································70 3.4.4 時域幅度統(tǒng)計特性和相關(guān)性····························································71 3.4.5 多普勒譜····················································································75 3.4.6 總結(jié)··························································································77 3.5 關(guān)于雙基地海雜波的討論·······································································78 參考文獻···································································································78 第4章 參數(shù)化建!ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ81 4.1 概述··································································································82 4.2 單基地平均后向散射·············································································82 4.2.1 英國皇家雷達研究院(RRE)模型···················································83 4.2.2 Sittrop模型·················································································83 4.2.3 佐治亞理工學院(GIT)模型··························································84 4.2.4 混合(Hybrid)模型·····································································85 4.2.5 技術(shù)服務(wù)公司(TSC)模型····························································86 4.2.6 Masuko模型················································································87 4.2.7 Ingara成像雷達系統(tǒng)集團(IRSG)模型············································88 4.2.8 美國海軍研究實驗室(NRL)模型···················································90 4.2.9 澳大利亞國防科技集團(DSTG)平均后向散射連續(xù)模型······················90 4.3 雙基地平均反射系數(shù)·············································································93 4.3.1 平面內(nèi)散射·················································································93 4.3.2 平面外散射·················································································96 4.4 K分布形狀參數(shù)····················································································96 4.4.1 小擦地角模型··············································································97 4.4.2 DSTG連續(xù)形狀參數(shù)模型·······························································98 4.5 多普勒譜··························································································101 4.5.1 平均多普勒譜模型······································································101 4.5.2 時域去相關(guān)模型·········································································104 4.5.3 演化多普勒譜模型······································································104 4.6 空間相關(guān)性·······················································································112 參考文獻·································································································114 第5章 海雜波仿真····················································································117 5.1 概述································································································118 5.2 均勻多普勒譜····················································································118 5.3 演化多普勒譜····················································································122 5.3.1 頻域仿真··················································································122 5.3.2 時域仿真··················································································124 5.3.3 多相位中心···············································································125 5.3.4 掃描雷達場景············································································126 5.3.5 仿真案例··················································································128 5.4 其他仿真算法····················································································132 5.4.1 空時有限雜波(STLC)模型························································132 5.4.2 復合G2模型·············································································135 5.4.3 算法比較··················································································137 5.4.4 總結(jié)························································································146 參考文獻·································································································146 第6章 性能預測建!ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ149 6.1 概述································································································150 6.2 雷達距離方程····················································································151 6.3 非相干處理·······················································································153 6.3.1 恒定目標··················································································155 6.3.2 起伏目標··················································································156 6.3.3 復合雜波··················································································157 6.3.4 相關(guān)回波··················································································158 6.4 相干處理··························································································161 6.4.1 多普勒濾波···············································································162 6.4.2 自適應處理···············································································164 6.5 端到端雷達性能評估···········································································167 6.5.1 雷達性能案例············································································168 6.5.2 仿真性能預測············································································173 6.5.3 討論························································································175 參考文獻·································································································176 第7章 海上目標檢測技術(shù)··········································································179 7.1 概述································································································180 7.2 非相干檢測·······················································································181 7.2.1 雜波統(tǒng)計特性············································································181 7.2.2 恒虛警概率檢測器······································································184 7.2.3 空間相關(guān)雜波背景下CA-CFAR的檢測性能·····································186 7.2.4 掃描間處理···············································································187 7.2.5 其他方法··················································································189 7.3 Pareto CFAR檢測器············································································190 7.3.1 Pareto Ⅰ型變換CFAR································································191 7.3.2 Pareto Ⅰ型完全充分統(tǒng)計量··························································191 7.3.3 Pareto Ⅱ型變換CFAR································································192 7.3.4 Pareto Ⅱ型貝葉斯CFAR·····························································193 7.3.5 檢測結(jié)果··················································································194 7.3.6 總結(jié)························································································197 7.4 相干檢測··························································································197 7.4.1 多通道雷達···············································································197 7.4.2 相干檢測策略············································································199 7.4.3 預多普勒白化············································································199 7.4.4 后多普勒檢測············································································201 7.4.5 后多普勒白化············································································201 7.4.6 基于模型的檢測·········································································202 7.4.7 多普勒譜混疊············································································203 7.5 非均勻環(huán)境下的檢測···········································································204 7.5.1 單一數(shù)據(jù)集檢測器······································································204 7.5.2 固定尺度混合············································································205 7.5.3 可變尺度混合············································································206 7.5.4 紋理估計和歸一化混合································································206 7.5.5 檢測結(jié)果··················································································207 參考文獻·································································································210 第8章 目標檢測的新方法··········································································214 8.1 時間/頻率目標分離·············································································215 8.1.1 子帶分解與重構(gòu)·········································································216 8.1.2 子帶選取··················································································218 8.1.3 檢測性能··················································································220 8.1.4 總結(jié)和展望···············································································222 8.2 稀疏信號分離····················································································222 8.2.1 調(diào)諧Q小波變換········································································223 8.2.2 短時傅里葉變換·········································································223 8.2.3 檢測方法··················································································226 8.2.4 檢測性能··················································································230 8.2.5 總結(jié)和展望···············································································232 8.3 字典學習··························································································232 8.3.1 字典學習技術(shù)············································································233 8.3.2 性能評估··················································································234 8.3.3 檢測性能··················································································236 8.3.4 總結(jié)和展望···············································································237 8.4 檢測前跟蹤·······················································································238 8.4.1 數(shù)學模型··················································································238 8.4.2 檢測濾波前的伯努利跟蹤·····························································240 8.4.3 仿真細節(jié)··················································································241 8.4.4 檢測和跟蹤性能·········································································242 8.4.5 總結(jié)和展望···············································································244 參考文獻·································································································245 附錄A 擬合優(yōu)度指標·················································································250 A.1 卡方檢驗··························································································251 A.2 Kolmogorov-Smirnov(KS)檢驗···························································251 A.3 Bhattacharyya距離··············································································251 A.4 閾值誤差··························································································252 參考文獻·································································································252 附錄B 演化多普勒譜的雙峰參數(shù)································································253 附錄C 大氣和降水損失·············································································260
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