不規(guī)則地形地波傳播衰減因子的改進(jìn)算法及結(jié)果一致性研究
doi: 10.11999/JEIT150077
-
1.
(陜西科技大學(xué)電氣與信息工程學(xué)院 西安 710021) ②(94559部隊(duì) 徐州 221005) ③(西安理工大學(xué) 西安 710048)
基金項(xiàng)目:
國家自然科學(xué)基金(61401261, 61271091)，陜西省教育廳科研計(jì)劃(14JK1084, 14JK1513)和陜西科技大學(xué)科研啟動基金(BJ11-20)
Improved Algorithm for Ground-wave Attenuation Factor Prediction over Irregular Terrain and Results Consistency Study
-
1.
(College of Electrical and Information Engineering, Shaanxi University of Science and Technology, Xi&rsquo
-
2.
(Unit No. 94559, Xuzhou 221005, China)
-
摘要: 針對低頻地波衰減因子預(yù)測算法中積分方程算法與其它經(jīng)典算法在均勻/分段均勻光滑路徑模型下求解結(jié)果不一致的問題進(jìn)行研究分析。引入球面校正因子和高程轉(zhuǎn)換技術(shù)，對積分方程方法進(jìn)行改進(jìn)，提高其與其它經(jīng)典算法在光滑路徑模型下預(yù)測結(jié)果的一致性。在此基礎(chǔ)上，將改進(jìn)算法用于實(shí)際不規(guī)則地面模型地波衰減因子預(yù)測，并與實(shí)測結(jié)果進(jìn)行比較。與原算法相比，改進(jìn)后的算法更適合考慮地球曲率影響下復(fù)雜長距離地面及空中地波衰減因子的求解。Abstract: The results of the integral equation method on the low-frequency ground-wave attenuation factor are inconsistent with other classic algorithms for the homogeneous/inhomogeneous smooth-path models. To solve this problem, a spherical correction factor and an elevation converting technique are introduced to the integral equation method. With these efforts, the results of the improved method are more consistent with other algorithms under the smooth-path conditions. Then, it is used for a real irregular-path model, and the calculated results are compared with the measured ones. It is shown that the proposed method is more suitable for the occasions both on the ground and in the air as the propagation path is long, irregular, and curved.
-
Feng Y and Astin I. Remote sensing of soil moisture using the propagation of Loran-C navigation signals[J]. IEEE Geoscience and Remote Sensing Letters, 2015, 12(1): 195-198. Lei W and Chen B. Low complexity sparse noise reduction method for Loran-C skywave delay estimation[J]. Electronics Letters, 2013, 49(24): 1572-1574. 李實(shí)鋒, 王玉林, 華宇, 等. 羅蘭-C信號抗干擾的快速檢測方法[J]. 西安交通大學(xué)學(xué)報(bào), 2013, 47(10): 91-96. Li Shi-feng, Wang Yu-lin, Hua Yu, et al.. A fast anti-interference detection method for Loran-C signal[J]. Journal of Xian Jiaotong University, 2013, 47(10): 91-96. Zhou Li-li, Xi Xiao-li, Zhang Jin-sheng, et al.. A new method for Loran-C ASF calculation over irregular terrain[J]. IEEE Transactions on Aerospace and Electronic Systems, 2013, 49(3): 1738-1744. afa?? J, Williams P, and Vejra?ka F. Accuracy performance of e-Loran receivers under cross-rate interference conditions [J]. Annual of Navigation, 2013, 19(1): 133-148. 李實(shí)鋒, 王玉林, 華宇, 等. 羅蘭-C信號快速捕獲方法及其性能分析[J]. 電子與信息學(xué)報(bào), 2013, 35(9): 2175-2179. Li Shi-feng, Wang Yu-lin, Hua Yu, et al.. Loran-C signal fast acquisition method and its performance analysis[J]. Journal of Electronics Information Technology, 2013, 35(9): 2175-2179. Seo J and Kim M. eLoran in Korea current status and future plans[C]. Proceedings of the European Navigation Conference, Vienna, 2013: 23-27. 潘威炎. 長波超長波極長波傳播[M]. 成都: 電子科技大學(xué)出版社, 2004: 106-173. Gesny H and Ravard O. Propagation over irregular terrain in the VHF band a review of integral equation models[C]. Proceedings of the National Conference on Antennas and Propagation, York, UK, 1999: 61-64. Hufford G A. An integral equation approach to the problem of wave propagation over an irregular surface[J]. Quarterly Journal of Applied Mathematics, 1952, 9(4): 391-404. Ott R H. An alternative integral equation for propagation over irregular terrain, 2[J]. Radio Science, 1971, 6(4): 429-435. Wu Z, Maclean T, Bagwell D, et al.. Propagation over an inhomogeneous irregular surface[J]. Radio Science, 1988, 23(1): 33-40. 梁仲寰, 李濱. 山區(qū)地形對100 kHz地波相位影響的實(shí)驗(yàn)研究[J]. 陜西天文臺臺刊, 1996, 19(1): 88-97. Liang Zhong-huan and Li Bin. The experiments on the effects of mountain terrain upon 100 kHz ground wave phase[J]. CSAO Publications, 1996, 19(1): 88-97. 王東文. 復(fù)雜地面條件下低頻地波傳播的三維預(yù)測[J]. 電波科學(xué)學(xué)報(bào), 1988, 3(1): 50-63. Wang Dong-wen. Three-dimensional prediction for the propagation of low-frequency groundwave over inhomogeneous irregular terrain[J]. Chinese Journal of Radio Science, 1988, 3(1): 50-53. 溫芳茹. 地形對地波衰減因子的影響[J]. 電波科學(xué)學(xué)報(bào), 1987, 2(1): 27-38. Wen Fang-ru. The effect of the terrain on the groundwave attenuation factor[J]. Chinese Journal of Radio Science, 1987, 2(1): 27-38. 彭懷云, 樊文生, 潘威炎, 等. 沿不規(guī)則不均勻地面?zhèn)鞑サ膫?cè)面波[J]. 電波科學(xué)學(xué)報(bào), 2006, 21(4): 497-502. Peng Huai-yun, Fan Wen-sheng, Pan Wei-yan, et al.. Lateral wave propagation along irregular and inhomogeneous ground [J]. Chinese Journal of Radio Science, 2006, 21(4): 497-502. 陳秀明. 羅蘭C組合導(dǎo)航中地波ASF修正研究[D]. [碩士論文], 中國科學(xué)院, 2007. Chen Xiu-ming. Study on ASF corrections in integrated navigation systems of Loran-C[D]. [Master dissertation], Chinese Academy of Sciences, 2007. 熊皓. 無線電波傳播[M]. 北京: 電子工業(yè)出版社, 2000: 331-363. 潘威炎, 彭懷云, 張紅旗. 非均勻光滑球面地波衰減因子的拋物方程算法[J]. 電波科學(xué)學(xué)報(bào), 2006, 21(1): 37-42. Pan Wei-yan, Peng Huai-yun, and Zhang Hong-qi. Parabolic equation algorithm of wave attenuation along inhomogeneous smooth ground[J]. Chinese Journal of Radio Science, 2006, 21(1): 37-42. Xi X, Zhou L, Zhang J, et al.. Combined IE-FDTD algorithm for long-range Loran-C ground-wave propagation[J]. IEEE Transactions on Antennas and Propagation, 2012, 60(8): 3802-3808. -
計(jì)量
- 文章訪問數(shù): 1438
- HTML全文瀏覽量: 137
- PDF下載量: 640
- 被引次數(shù): 0
下載:
