滚转条件下单天线GPS跟踪算法设计
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摘要
提出了一种滚转条件下的单天线GPS跟踪算法。该算法能够在较低转速下,对间断的GPS信号进行跟踪,同时能够准确地计算出弹丸的滚转速度。该方法首先对单天线滚转条件下的接收信号进行分析与建模。然后,基于滚转对接收到的卫星信号的幅度调制特性的影响,利用旋转时信号幅度的对称性进行解旋,从而得到弹丸的滚动速率和角度。实际测试结果表明,利用信号的I/Q幅值信息,可以实时计算滚转弹丸的滚动速率和滚动角度,并且计算精度可以满足大多数实际应用的要求。
A GPS tracking algorithm is studied and applied to locate a spinning vehicle on which a single-patch antenna is mounted.This algorithm is able to track global positioning system( GPS) signals with intermittent availability at a lower rotational speed, but with enough accuracy to determine the rolling rate. Firstly, the received signals of single rolling antenna is analyzed and modeled.Then, based on the fact that the received signal has amplitude modulation information relative to the rolling characteristic, demodulation is performed using the symmetry of the rotational amplitude to detect the rolling rate and angle of the projectile. Actual test results show that, for using amplitude information of I/Q signals, rolling rate and rolling angle of spinning vehicle can be calculated in real-time by using proposed method, and calculation accuracy can meet requirements of most practical applications.
A GPS tracking algorithm is studied and applied to locate a spinning vehicle on which a single-patch antenna is mounted.This algorithm is able to track global positioning system( GPS) signals with intermittent availability at a lower rotational speed, but with enough accuracy to determine the rolling rate. Firstly, the received signals of single rolling antenna is analyzed and modeled.Then, based on the fact that the received signal has amplitude modulation information relative to the rolling characteristic, demodulation is performed using the symmetry of the rotational amplitude to detect the rolling rate and angle of the projectile. Actual test results show that, for using amplitude information of I/Q signals, rolling rate and rolling angle of spinning vehicle can be calculated in real-time by using proposed method, and calculation accuracy can meet requirements of most practical applications.
引文
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[5]DOTY J H.Advanced spinning-vehicle navigation-a new technique in navigation on munitions[C].Proceedings of the ION 57th Annual Meeting,2001:745-754.
[6]DOTY J H,ANDERSON D A,BYBEE T D.A demonstration of advanced spinning-vehicle navigation[C].Proceedings of the ION 61th Annual Meeting,2004:573-584.
[7]CHEOLIM H,LEE S J.GPS signal tracking on a multiantenna mounted spinning vehicle bycompensating for the spin effect[J].International Journal of Control,Automation and Systems,2018,16(2):867-874.
[8]曾广裕.非全向天线旋转条件下导航方法及滚转姿态检测技术[D].北京:北京理工大学,2015.
[9]韦照川,潘军道,吴国增.基于SoC FPGA的北斗接收机载波跟踪环路设计[J].电子技术应用,2018,44(6):124-128.
[10]FENTON P C,KUNYSZ W.Method and apparatus using GPS to determine position and atttidude of a rotation vehicle:USA,US6128557[P].2000-08-03.
[11]LUO J,VANDER VELDE W E,TSENG H W,et al.Single antenna GPS measurement of roll rate and roll angle of spinning platform:USA,US9429660[P].2012-01-03.
[12]ALEXANDER S B,REDHEAD R.Systems and methods for tracking power modulation:USA,US8711035[P].2014-10-30.
[2]SEIDEL W,GUISCHARD F.Method for autonomous guidance of a spin-stabilized artillery projectile and autonomously guided artillery projectile for realizing this method:USA,US6135387[P].1999-03-25.
[3]李耀军,张江华,费涛,等.基于单天线GPS载波幅度的旋转载体滚转角测量[J].火控雷达技术,2014(3):6-11.
[4]DOTY J H,MCGRAW G.A spinning-vehicle navigation using apparent modulation of navigational signals:USA,US6520448[P].2003-02-18.
[5]DOTY J H.Advanced spinning-vehicle navigation-a new technique in navigation on munitions[C].Proceedings of the ION 57th Annual Meeting,2001:745-754.
[6]DOTY J H,ANDERSON D A,BYBEE T D.A demonstration of advanced spinning-vehicle navigation[C].Proceedings of the ION 61th Annual Meeting,2004:573-584.
[7]CHEOLIM H,LEE S J.GPS signal tracking on a multiantenna mounted spinning vehicle bycompensating for the spin effect[J].International Journal of Control,Automation and Systems,2018,16(2):867-874.
[8]曾广裕.非全向天线旋转条件下导航方法及滚转姿态检测技术[D].北京:北京理工大学,2015.
[9]韦照川,潘军道,吴国增.基于SoC FPGA的北斗接收机载波跟踪环路设计[J].电子技术应用,2018,44(6):124-128.
[10]FENTON P C,KUNYSZ W.Method and apparatus using GPS to determine position and atttidude of a rotation vehicle:USA,US6128557[P].2000-08-03.
[11]LUO J,VANDER VELDE W E,TSENG H W,et al.Single antenna GPS measurement of roll rate and roll angle of spinning platform:USA,US9429660[P].2012-01-03.
[12]ALEXANDER S B,REDHEAD R.Systems and methods for tracking power modulation:USA,US8711035[P].2014-10-30.