【摘要】：技術(shù)參數(shù)設(shè)計(jì)研究是提升全極化SAR海洋環(huán)境探測(cè)能力的有效途徑.本文通過(guò)分析噪聲等效后向散射系數(shù)和輻射分辨率與海洋環(huán)境探測(cè)的地球物理聯(lián)系,提出一種全極化SAR關(guān)鍵技術(shù)參數(shù)設(shè)計(jì)方法.采用全極化海面散射模型計(jì)算不同海洋環(huán)境條件下的雷達(dá)后向散射系數(shù),據(jù)此確定全極化SAR對(duì)海探測(cè)的噪聲等效后向散射系數(shù),再將其作為合成孔徑雷達(dá)方程輸入?yún)?shù),以輻射分辨率和信噪比的函數(shù)關(guān)系為約束條件,開(kāi)展信噪比、輻射分辨率和系統(tǒng)功率孔徑積等技術(shù)參數(shù)設(shè)計(jì)研究.論文通過(guò)全極化海面散射模型的仿真計(jì)算,發(fā)現(xiàn)對(duì)海探測(cè)的噪聲等效后向散射系數(shù)設(shè)計(jì)為-35.0 dB,可滿(mǎn)足全極化SAR不同海洋環(huán)境條件的探測(cè)需求.通過(guò)研究輻射分辨率與信噪比的函數(shù)關(guān)系,發(fā)現(xiàn)對(duì)海探測(cè)的最優(yōu)信噪比為8.0 dB.C波段機(jī)載全極化SAR設(shè)計(jì)結(jié)果表明,由于兼顧了海洋環(huán)境探測(cè)需求,本文設(shè)計(jì)方法使得全極化SAR技術(shù)參數(shù)同時(shí)滿(mǎn)足了海洋環(huán)境應(yīng)用需求和系統(tǒng)設(shè)計(jì)要求.
[Abstract]:The design of technical parameters is an effective way to improve the detection ability of fully polarized SAR marine environment. In this paper, a design method of key technical parameters of fully polarized SAR is proposed by analyzing the geophysical relationship between noise equivalent backscattering coefficient and radiation resolution and marine environment detection. The radar backscattering coefficients under different marine environment conditions are calculated by using the fully polarized sea surface scattering model. Based on this, the equivalent backscattering coefficients of fully polarized SAR for sea detection are determined, and then taken as the input parameters of synthetic aperture radar equation, the technical parameters such as signal-to-noise ratio (SNR), radiation resolution and system power aperture product are designed and studied with the functional relationship between radiation resolution and signal-to-noise ratio (SNR) as constraints. Through the simulation calculation of the fully polarized sea surface scattering model, it is found that the noise equivalent backscattering coefficient of sea detection is designed to be-35.0 dB, which can meet the detection requirements of different marine environmental conditions of fully polarized SAR. By studying the functional relationship between radiation resolution and signal-to-noise ratio, it is found that the optimal signal-to-noise ratio of sea detection is 8.0 dB.C band airborne fully polarized SAR design results show that the design method makes the fully polarized SAR technical parameters meet the requirements of marine environment application and system design at the same time because of taking into account the needs of marine environment detection.
【作者單位】： 解放軍理工大學(xué)氣象海洋學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):41076118,41375029,41306187)資助的課題~~
【分類(lèi)號(hào)】：TN958

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 郭華東;李新武;;新一代SAR對(duì)地觀測(cè)技術(shù)特點(diǎn)與應(yīng)用拓展[J];科學(xué)通報(bào);2011年15期

2 楊勁松,黃韋艮,周長(zhǎng)寶,傅斌,史愛(ài)琴,厲冬玲;合成孔徑雷達(dá)圖像的近岸海面風(fēng)場(chǎng)反演[J];遙感學(xué)報(bào);2001年01期

3 趙現(xiàn)斌;嚴(yán)衛(wèi);孔毅;韓丁;劉文俊;;機(jī)載C波段全極化SAR海面風(fēng)矢量反演理論研究及實(shí)驗(yàn)驗(yàn)證[J];物理學(xué)報(bào);2013年13期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 江東,王建華;空間信息技術(shù)支持下的沿海風(fēng)能資源評(píng)價(jià)[J];地理科學(xué)進(jìn)展;2004年06期

2 陳艷玲;黃s，

本文編號(hào)：2515234