基于極化散射特性的空間錐體目標(biāo)寬帶回波對齊

邵長宇; 杜蘭; 韓勛; 劉宏偉

doi:10.11999/JEIT150316

基于極化散射特性的空間錐體目標(biāo)寬帶回波對齊

doi: 10.11999/JEIT150316

基金項(xiàng)目:

國家自然科學(xué)基金(61271024, 61201292, 61322103)，中央高?；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(K5051302010)，上海航天科技創(chuàng)新基金(SAST2015009)，航空科學(xué)基金(20142081009)，航空電子系統(tǒng)射頻綜合仿真航空科技重點(diǎn)實(shí)驗(yàn)室基金

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出版歷程
- 收稿日期: 2015-03-17
- 修回日期: 2015-10-20
- 刊出日期: 2016-02-19

Polarization Scattering Characteristics Based Range Alignment for Bandwidth Echoes of Space Coning Target

Funds:

The National Natural Science Foundation of China (61271024, 61201292, 61322103), The Fundamental Research Funds for the Central Universities (K5051302010), Shanghai Aerospace Science and Technology Innovation Fund (SAST2015009), Aviation Science Fund (20142081009), Key Laboratory Fund of RF Integrated Laboratory in Avionics System

摘要

摘要: 包絡(luò)對齊是寬帶回波預(yù)處理中重要的一部分，然而對于空間錐體這類只有較少散射中心且目標(biāo)存在微動的情況，現(xiàn)有的包絡(luò)對齊方法并不能得到較好的對齊結(jié)果。對于一些利用寬帶回波進(jìn)行微動目標(biāo)參數(shù)估計的算法，包絡(luò)對齊是其算法的關(guān)鍵一步。該文提出一種基于極化散射特性進(jìn)行包絡(luò)對齊的算法，算法首先利用極化譜估計與幅相聯(lián)合估計(P-CAPES)超分辨方法估計寬帶極化回波中的散射中心的數(shù)目、位置和極化散射矩陣，然后計算前后時刻回波散射中心的極化相似性參數(shù)，最后利用得到相似性參數(shù)進(jìn)行包絡(luò)對齊?；陔姶庞嬎銛?shù)據(jù)的實(shí)驗(yàn)結(jié)果驗(yàn)證了算法的有效性。
- 寬帶雷達(dá) /
- 微動 /
- 極化散射矩陣 /
- 極化譜估計與幅相聯(lián)合估計 /
- 包絡(luò)對齊
Abstract: Range alignment is an important step in the preprocessing of wideband radar echoes. However for the echoes of space coning target with micro-motions that only has several scatter centers, the range alignment methods available do not work well. Range alignment is the key step in the parameters estimation algorithms for wideband radar echoes of targets with micro-motions. This paper proposes a range alignment method based on the polarization scattering characteristics. The proposed method first estimates the number, locations and polarization scattering matrices of the scatter centers in the wideband radar echoes using the combing Pole Capon and Amplitude and Phase EStimation (P-CAPES) super-resolution method. Then, polarization similarities of the scatter centers in the adjacent echoes are calculated with the polarization scattering matrices and are used to range alignment. Experiments verify the effectiveness of the proposed method by using electromagnetic data.
- Wideband radar /
- Micro-motion /
- Polarization scattering matrix /
- Combing Pole Capon and Amplitude and Phase EStimation (P-CAPES) /
- Range alignment

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