北斗反射信號(hào)海風(fēng)海浪反演系統(tǒng)與試驗(yàn)

楊東凱; 王翔宇; 劉建華; 王峰

doi:10.11999/JEIT180397

北斗反射信號(hào)海風(fēng)海浪反演系統(tǒng)與試驗(yàn)

doi: 10.11999/JEIT180397 cstr: 32379.14.JEIT180397

1.
北京航空航天大學(xué)電子信息工程學(xué)院 ??北京 ??100083
2.
勝利油田安全環(huán)保督查中心 ??東營(yíng) ??257000

基金項(xiàng)目: 國(guó)家自然科學(xué)基金(41774028)，國(guó)家重點(diǎn)研發(fā)計(jì)劃(2017YFB050802)

詳細(xì)信息

作者簡(jiǎn)介:
楊東凱：男，1971年生，教授，研究方向?yàn)樾l(wèi)星導(dǎo)航信號(hào)處理及應(yīng)用技術(shù)、無(wú)線傳輸?shù)?/p>
王翔宇：男，1990年生，碩士生，研究方向?yàn)樾l(wèi)星導(dǎo)航信號(hào)及其在風(fēng)浪遙感中的應(yīng)用

劉建華：男，1975年生，高級(jí)工程師，研究方向?yàn)橛吞锇踩a(chǎn)管理

王峰：男，1989年生，博士生，研究方向?yàn)樾l(wèi)星導(dǎo)航信號(hào)及其在海洋遙感中的應(yīng)用

通訊作者:
王峰　wangf.19@163.com

中圖分類號(hào): TN967.1; P237
計(jì)量
- 文章訪問(wèn)數(shù): 1733
- HTML全文瀏覽量: 595
- PDF下載量: 75
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2018-04-27
- 修回日期: 2018-09-10
- 網(wǎng)絡(luò)出版日期: 2018-09-21
- 刊出日期: 2019-02-01

BeiDou-reflectometry Sea Wind and Wave Retrieval System and Experiment

1.
School of Electronic and Information Engineering, Beihang University, Beijing 100083, China
2.
Safety and Environmental Supervision Center, Shengli Oil Field, Dongying 257000, China

Funds: The National Natural Science Foundation of China (41774028), The National Key Research and Development Plan (2017YFB050802)

摘要

摘要:
該文設(shè)計(jì)并實(shí)現(xiàn)了一種小型低功耗的北斗反射信號(hào)海風(fēng)海浪反演系統(tǒng)，針對(duì)反演精度受衛(wèi)星高度角影響較大的問(wèn)題，提出高度角正弦值冪指數(shù)修正方法，且為降低風(fēng)速突變對(duì)風(fēng)速反演的影響，對(duì)風(fēng)速反演模型進(jìn)行了延時(shí)修正，有效提高了有效波高和風(fēng)速的反演精度。為了進(jìn)一步提高反演精度，提出多星聯(lián)合觀測(cè)和單邊濾波的方法。北斗反射信號(hào)海風(fēng)海浪探測(cè)試驗(yàn)結(jié)果表明：設(shè)計(jì)和實(shí)現(xiàn)的反演系統(tǒng)具備長(zhǎng)期穩(wěn)定運(yùn)行和觀測(cè)的性能；提出的反演模型和精度提升方法可以有效提高反演精度，有效波高和風(fēng)速反演精度分別可達(dá)0.14 m和1.28 m/s，相比于Soulat等人提出的反演模型，分別提高了0.13 m和0.78 m/s。
- 北斗反射信號(hào) /
- 海風(fēng)海浪反演 /
- 高度角修正 /
- 多星觀測(cè) /
- 單邊濾波
Abstract:
A low power and cost BeiDou-reflectometry used to retrieve Significiant Wave Height (SWH) and wind is designed and implemented. To improve the retrieval accuracy, a correction method based on the power function of the elevation angle sinusoidal and a delay correlation for the rapid change of wind speed is proposed. Moreover, combined observation of multi-satellite signals and single-side filtering for the observable are performed to improve further the retrieval accuracy. The experiment results of observating SWH and wind speed using reflected BeiDou signals show that designed and developed system could implement long-term and stable observation; the retrieval accuracies of SWH and wind speed retrieved by propsoed retrieval models and improvement methods of the retreival accuracy are 0.13 m and 1.28 m/s which are 0.13 m and 0.78 m/s higher than the methods proposed by Soulat et al.
- Reflected BeiDou signals /
- Wind speed and Significant Wave Height (SWH) retrieval /
- Correction of elevation angle /
- Multi-satellites observation /
- Single-side filtering

HTML全文

圖 1 系統(tǒng)整體框架

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圖 2 基帶信號(hào)處理流程

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圖 3 試驗(yàn)期間天線架設(shè)情況

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圖 4 冪指數(shù)模型海浪反演結(jié)果

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圖 5 12月份東營(yíng)港風(fēng)浪歸一化數(shù)值及變化曲線

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圖 6 延遲冪指數(shù)模型海風(fēng)反演結(jié)果

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圖 7 試驗(yàn)期間北斗反射可見(jiàn)星分布

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圖 8 鄰域?yàn)V波效果

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表 1 接收機(jī)參數(shù)表

設(shè)備名稱	尺寸(cm)	功耗(W)	工作電壓(V)	反演模塊	輸出結(jié)果
GOLD-RTR^[14]	48×48×36	50	220	–	相關(guān)波形
GRrSv.2^[15]	48×48×18	50	220	–	相關(guān)波形
Oceanpal^[16]	48×48×18	100	100～240	PC機(jī)	相關(guān)波形、風(fēng)浪值
本文反演系統(tǒng)	24×24×18	10	36, 220	ARM, PC機(jī)	相關(guān)波形、風(fēng)浪值

下載: 導(dǎo)出CSV

表 2 不同反演方法對(duì)比

反演模型	優(yōu)化算法	有效波高誤差 (m)	風(fēng)速誤差 (m/s)
反比例模型	–	0.27	2.06
反比例模型	–	0.21	1.43
指數(shù)模型(對(duì)風(fēng)速延時(shí)修正)	多星觀測(cè)	0.19	1.36
	平滑濾波	0.16	1.30
	多星&平滑	0.14	1.28

下載: 導(dǎo)出CSV

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