改進射線描跡的低仰角散射斜延遲實時估計

吳文溢; 鐘方平; 王萬鵬; 陳西宏; 朱丹

doi:10.11999/JEIT190014

改進射線描跡的低仰角散射斜延遲實時估計

doi: 10.11999/JEIT190014 cstr: 32379.14.JEIT190014

1.
西北核技術(shù)研究所西安 710024
2.
空軍工程大學(xué)防空反導(dǎo)學(xué)院西安 710051

基金項目: 國家自然科學(xué)基金(611701525)

詳細信息

作者簡介:
吳文溢：男，1993年生，工程師，碩士，研究方向為高精度時間同步技術(shù)研究

鐘方平：男，1966年生，研究員，博士生導(dǎo)師，研究方向為工程力學(xué)

王萬鵬：男，1975年生，高級工程師，研究方向為爆炸力學(xué)

陳西宏：男，1964年生，教授，博士生導(dǎo)師，研究方向為大容量散射通信技術(shù)

朱丹：女，1982年生，工程師，研究方向為工程防護

通訊作者:
吳文溢　18092161443@qq.com

中圖分類號: TN011
計量
- 文章訪問數(shù): 2334
- HTML全文瀏覽量: 899
- PDF下載量: 52
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2019-01-07
- 修回日期: 2019-04-23
- 網(wǎng)絡(luò)出版日期: 2019-04-29
- 刊出日期: 2019-10-01

Real-time Estimation of Tropospheric Scattering Slant Delay of Low-elevation Obtained by Improved Ray Tracing

1.
Northwest Institute of Nuclear Technology, Xi’an 710024, China
2.
Air and Missile Defense College, Air Force Engineering University, Xi’an 710051, China

Funds: The National Natural Science Foundation of China (611701525)

摘要

摘要: 針對任意測站的對流層散射斜延遲估算時存在探空氣象數(shù)據(jù)不易實時獲取的不足，該文提出一種利用地面氣象參數(shù)內(nèi)插改進射線描跡計算公式的對流層散射斜延遲估計算法。該算法利用中緯度大氣氣象參數(shù)公式推導(dǎo)了折射指數(shù)隨地心距變化的關(guān)系式，并采用氣象參數(shù)內(nèi)插方法獲取溫度變化率和水汽壓變化率，克服了射線描跡法對探空數(shù)據(jù)的依賴。根據(jù)亞洲地區(qū)6個國際GPS服務(wù)(IGS)測站2012年的實測氣象數(shù)據(jù)，驗證了該文算法解算天頂延遲年平均偏差的絕對值在1 cm以內(nèi)；選取基線距離適宜的3個測站分成3組散射通信比對站，利用射線描跡法計算了其在0°～5°入射角下全年的斜延遲，結(jié)果表明，3組比對站進行單向傳輸?shù)淖畲笮毖舆t為17.03～33.10 m；進行雙向時間比對相互抵消95%時，時間延遲為2.88～5.52 ns。
- 對流層散射 /
- 斜延遲 /
- 射線描跡法 /
- 折射指數(shù)
Abstract: Considering the disadvantage of oblique delay estimation of tropospheric scattering at arbitrary stations, which is difficult to obtain real-time sounding meteorological data, an oblique delay estimation algorithm of tropospheric scattering based on improved ray tracing method with ground meteorological parameters is proposed. In order to get rid of the method’s dependence on radiosonde data, the algorithm infers the relationship between refractive index and altitude through the formula of meteorological parameters in the model of medium latitude atmosphere. The interpolation of meteorological parameters in the model of UNB3m is used to gain the coefficient of temperature and water vapor pressure. Meteorological data for 2012 from 6 International GNSS Service (IGS) stations in Asia are selected to test the applicability of new method, the results suggest that precision is less than 1 cm. Then, the tropospheric slant delays of three parts observation stations under different angles of incidence (0°～5°) are calculated by the modified algorithm. The results suggest that the maximum delay is 17.03～33.10 m in a single way time transfer. In two way time transfer, when the delay can counteract 95%, time delay is 2.88～5.52 ns.
- Tropospheric scatter /
- Slant propagation delay /
- Ray tracing /
- Refractive index

HTML全文

圖 1 射線描跡法示意圖

下載: 全尺寸圖片幻燈片

圖 2 對流層散射通信原理簡化圖

下載: 全尺寸圖片幻燈片

圖 3 測站平均偏差分布直方圖

下載: 全尺寸圖片幻燈片

圖 4 對流層散射斜延遲

下載: 全尺寸圖片幻燈片

圖 5 最大延遲時刻對流層散射斜延遲隨入射角變化圖

下載: 全尺寸圖片幻燈片

圖 6 0°入射角下一年對流層散射斜延遲變化圖

下載: 全尺寸圖片幻燈片

表 1 氣象參數(shù)格網(wǎng)值

$F{(^ \circ })$	avg		amp
$F{(^ \circ })$	$\beta $	$\lambda $	$\beta $	$\lambda $
15	0.00630	2.77	0.000	0.000
30	0.00605	3.51	0.00025	0.33
45	0.00558	2.57	0.00032	0.46
60	0.00539	1.81	0.00081	0.74
75	0.00453	1.55	0.00062	0.30

下載: 導(dǎo)出CSV

表 2 測站信息

站名	北緯($^\circ $)	東經(jīng)($^\circ $)	海拔(m)
TSKB	36.11	140.09	67.30
KSMV	35.96	140.66	57.93
KGNI	35.71	139.49	123.50
BJFS	39.36	115.53	54.70
WUHN	30.31	114.21	27.00
TWTF	24.95	121.16	203.10

下載: 導(dǎo)出CSV

表 3 各模型統(tǒng)計結(jié)果(cm)

測站	UNB3m模型		EGNOS模型		本文算法
測站	平均偏差	RMS	平均偏差	RMS	平均偏差	RMS
TSKB	–0.69	8.57	0.63	8.64	–0.70	7.57
KSMV	–0.60	8.44	0.77	8.53	–0.77	7.93
KGNI	–0.67	7.80	0.79	7.89	–0.69	7.41
BJFS	–0.53	7.65	0.72	8.23	–0.56	7.32
WUHN	–0.59	7.53	0.66	8.44	–0.66	7.44
TWTF	–0.80	8.62	0.78	8.65	–0.79	7.85

下載: 導(dǎo)出CSV

表 4 比對站情況表

比對站	A&B	A&C	B&C
L(km)	53.96	70.06	109.19
${\theta _0}$($^\circ $)	$[0, 5)$	$[0, 5)$	$[0, 5)$

下載: 導(dǎo)出CSV

參考文獻(18)

PAN Minghai, HAN Qinghua, GONG Shufeng, et al. Impacts of space-time-frequency synchronization errors onwideband target echo characteristics of bistatic/multistatic radar[J]. Journal of Systems Engineering and Electronics, 2016, 27(3): 562–573. doi: 10.1109/JSEE.2016.00060

萬顯榮, 孫緒望, 易建新, 等. 分布式數(shù)字廣播電視外輻射源雷達系統(tǒng)同步設(shè)計與測試[J]. 雷達學(xué)報, 2017, 6(1): 65–72. doi: 10.12000/JR16134

WAN Xianrong, SUN Xuwang, YI Jianxin, et al. Synchronous design and test of distributed passive radar systems based on digital broadcasting and television[J]. Journal of Radars, 2017, 6(1): 65–72. doi: 10.12000/JR16134

WANG Zhengbo, ZHAO Lu, WANG Shiguang, et al. COMPASS time synchronization and dissemination-Toward centimetre positioning accuracy[J]. Science China Physics, Mechanics & Astronomy, 2014, 57(9): 1788–1804. doi: 10.1007/s11433-014-5508-z

CHEN Xihong, LIU Qiang, HU Denghua, et al. Delay analysis of two way time transfer based on troposphere gradients[C]. The 10th International Conference on Wireless Communications, Networking and Mobile Computing, Beijing, China, 2014: 543–547.

HUANG Yijun, FUJIEDA M, TAKIGUCHI H, et al. Stability improvement of an operational two-way satellite time and frequency transfer system[J]. Metrologia, 2016, 53(2): 881–890. doi: 10.1088/0026-1394/53/2/881

SLIWCZYNSKI L, KREHLIK P, KOLODZIEJ J, et al. Fiber-optic time transfer for UTC-traceable synchronization for telecom networks[J]. IEEE Communications Standards Magazine, 2017, 1(1): 66–73. doi: 10.1109/MCOMSTD.2017.1600766ST

劉強, 陳西宏, 薛倫生, 等. 基于映射函數(shù)的對流層雙向時間比對斜延遲分析[J]. 電子科技大學(xué)學(xué)報, 2015, 44(5): 689–694. doi: 10.3969/j.issn.1001-0548.2015.05.009

LIU Qiang, CHEN Xihong, XUE Lunsheng, et al. Slant propagation delay analysis in two way troposphere transfer based on mapping function[J]. Journal of University of Electronic Science and Technology of China, 2015, 44(5): 689–694. doi: 10.3969/j.issn.1001-0548.2015.05.009

王紅光, 吳振森, 朱慶林. 大氣折射對雷達低仰角跟蹤誤差的影響分析[J]. 電子與信息學(xué)報, 2012, 34(8): 1893–1896. doi: 10.3724/SP.J.1146.2011.01186

WANG Hongguang, WU Zhensen, and ZHU Qinglin. Influence analysis of atmospheric refraction on low-angle radar tracking errors[J]. Journal of Electronics &Information Technology, 2012, 34(8): 1893–1896. doi: 10.3724/SP.J.1146.2011.01186

喬江, 杜曉燕, 衛(wèi)佩佩. 一種對流層折射誤差的實時簡化修正方法[J]. 強激光與粒子束, 2018, 30(10): 103205. doi: 10.11884/HPLPB201830.180146

QIAO Jiang, DU Xiaoyan, and WEI Peipei. Real-time simplified correction method for tropospheric refraction error[J]. High Power Laser and Particle Beams, 2018, 30(10): 103205. doi: 10.11884/HPLPB201830.180146

吳文溢, 陳西宏, 劉少偉. 低仰角對流層散射斜延遲實時估計方法[J]. 電子與信息學(xué)報, 2017, 39(6): 1326–1332. doi: 10.11999/JEIT160776

WU Wenyi, CHEN Xihong, and LIU Shaowei. Real-time estimation method for tropospheric scatter slant delay at low elevation[J]. Journal of Electronics &Information Technology, 2017, 39(6): 1326–1332. doi: 10.11999/JEIT160776

衛(wèi)佩佩, 杜曉燕, 江長蔭. 基于射線描跡法微分形式的大氣折射誤差修正方法研究[J]. 電子與信息學(xué)報, 2018, 40(8): 1838–1846. doi: 10.11999/JEIT171131

WEI Peipei, DU Xiaoyan, and JIANG Changyin. Atmosphere refractive error correction method based on ray tracing differential form[J]. Journal of Electronics &Information Technology, 2018, 40(8): 1838–1846. doi: 10.11999/JEIT171131

陳西宏, 劉贊, 劉繼業(yè), 等. 低仰角下對流層散射斜延遲估計方法[J]. 電子與信息學(xué)報, 2016, 38(2): 408–412. doi: 10.11999/JEIT150628

CHEN Xihong, LIU Zan, LIU Jiye, et al. Estimating tropospheric slant scatter delay at low elevation[J]. Journal of Electronics &Information Technology, 2016, 38(2): 408–412. doi: 10.11999/JEIT150628

劉繼業(yè), 陳西宏, 劉贊. 對流層散射雙向時間比對中對流層斜延遲實時估計[J]. 電子與信息學(xué)報, 2018, 40(3): 587–593. doi: 10.11999/JEIT170581

LIU Jiye, CHEN Xihong, and LIU Zan. Real-time estimation of tropospheric slant delay in two-way troposphere time transfer[J]. Journal of Electronics &Information Technology, 2018, 40(3): 587–593. doi: 10.11999/JEIT170581

衛(wèi)佩佩, 杜曉燕, 江長蔭. 對流層散射超視距信道傳輸損耗快慢衰落特性研究[J]. 電子與信息學(xué)報, 2018, 40(7): 1745–1751. doi: 10.11999/JEIT170952

WEI Peipei, DU Xiaoyan, and JIANG Changyin. Study on tropospheric scatter beyond-line-of-sight channel transmission loss for short-term and long-term fading[J]. Journal of Electronics &Information Technology, 2018, 40(7): 1745–1751. doi: 10.11999/JEIT170952

ERIKSSON D, MACMILLAN D S, and GIPSON J M. Tropospheric delay ray tracing applied in VLBI analysis[J]. Journal of Geophysical Research: Solid Earth, 2014, 119(12): 9156–9170. doi: 10.1002/2014JB011552

LEANDRO R F, LANGLEY R B, and SANTOS M C. UNB3m_pack: A neutral atmosphere delay package for radiometric space techniques[J]. GPS Solutions, 2008, 12(1): 65–70. doi: 10.1007/s10291-007-0077-5

孔建, 姚宜斌, 單路路, 等. GPT2w模型在南極地區(qū)精度分析[J]. 測繪學(xué)報, 2018, 47(10): 1316–1325. doi: 10.11947/j.AGCS.2018.20170487

KONG Jian, YAO Yibin, SHAN Lulu, et al. The accuracy analysis of GPT2w at the Antarctic area[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(10): 1316–1325. doi: 10.11947/j.AGCS.2018.20170487

姚宜斌, 徐星宇, 胡羽豐. GGOS對流層延遲產(chǎn)品精度分析及在PPP中的應(yīng)用[J]. 測繪學(xué)報, 2017, 46(3): 278–287. doi: 10.11947/j.AGCS.2017.20160383

YAO Yibin, XU Xingyu, and HU Yufeng. Precision analysis of GGOS tropospheric delay Product and its application in PPP[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(3): 278–287. doi: 10.11947/j.AGCS.2017.20160383

相關(guān)文章

施引文獻

資源附件(0)

訪問統(tǒng)計