一種彈載SAR子孔徑成像算法

江淮; 陳思; 趙惠昌; 漢敏; 張淑寧

doi:10.11999/JEIT161337

一種彈載SAR子孔徑成像算法

doi: 10.11999/JEIT161337

1.
(南京理工大學(xué)電子工程與光電技術(shù)學(xué)院南京 210094）②(東南大學(xué)微波與毫米波重點(diǎn)實(shí)驗(yàn)室南京 210094)

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(61301216)，江蘇省自然科學(xué)基金(BK20160848)

計(jì)量
- 文章訪問(wèn)數(shù): 1318
- HTML全文瀏覽量: 184
- PDF下載量: 212
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-12-08
- 修回日期: 2017-05-09
- 刊出日期: 2017-10-19

Subaperture Imaging Algorithm for Missile-borne SAR

1.
(School of Electronic &
2.
(State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210094, China)

Funds:

The National Natural Science Foundation of China (61301216), The Natural Science Foundation of Jiangsu Province (BK20160848)

摘要

摘要: 彈載合成孔徑雷達(dá)在子孔徑信號(hào)處理時(shí)，由于運(yùn)動(dòng)的復(fù)雜性和距離方位的強(qiáng)耦合，增加了成像處理的難度。針對(duì)這一問(wèn)題，該文分析了該成像體制下的距離徙動(dòng)特性并引入二次調(diào)頻函數(shù)進(jìn)行統(tǒng)一距離徙動(dòng)校正；在方位向處理上則通過(guò)頻域投影補(bǔ)償調(diào)頻率空變。與傳統(tǒng)算法相比，新算法可對(duì)子孔徑回波進(jìn)行更有效的成像與聚焦，仿真結(jié)果證明了算法的正確性和有效性。
- 彈載SAR /
- 子孔徑成像 /
- 2維加速度 /
- 方位頻域投影
Abstract: In the missile borne subaperture SAR mode, the complicate motion of the platform and the strong coupling between range and azimuth present substantial difficulty for echo data processing. To solve this problem, the range migration characteristics of the echo are analyzed and a secondary frequency function is introduced for uniform migration correction. During the azimuth processing, the azimuth frequency domain projection is applied to compensating the Doppler frequency modulation variation. Compared with the traditional algorithm, this proposed algorithm can focus the echo more effectively. Simulation results show the correctness and validity of the proposed algorithm.
- Missile-borne SAR /
- Subaperture imaging /
- 2-D acceleration /
- Azimuth frequency domain projection

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參考文獻(xiàn)(15)

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