衛(wèi)星導航欺騙干擾信號仿真與檢測關(guān)鍵技術(shù)研究
發(fā)布時間：2019-03-03 18:59
【摘要】：隨著衛(wèi)星導航系統(tǒng)在國民經(jīng)濟和軍事領(lǐng)域的廣泛應用,以及電子技術(shù)的飛速發(fā)展,欺騙式干擾不僅逐漸成為了衛(wèi)星導航系統(tǒng)的重要威脅,甚至具備了產(chǎn)生災難性后果的能力�？梢�,衛(wèi)星導航欺騙干擾相關(guān)技術(shù)的研究,已經(jīng)有了很大程度的必要性和緊迫性。特別是在軍事領(lǐng)域,包括炮彈在內(nèi)的各種運動載體上安裝的單天線或天線陣接收終端都需要采用抗欺騙技術(shù),才能保證載體運行時導航與制導系統(tǒng)輸出結(jié)果的正確性。然而,正是由于欺騙干擾的危害性和終端平臺的復雜性,無論是軍用或民用的欺騙干擾相關(guān)技術(shù),都難以在實際環(huán)境中進行研究和測試。因此,欺騙干擾信號仿真技術(shù)作為能夠提供低成本、高精度、可配置、可重復欺騙干擾研究與測試平臺的技術(shù),在理論和工程上具有重要研究意義。在此背景下,論文針對當前欺騙干擾信號仿真和欺騙干擾檢測技術(shù)中存在的問題,開展了以下四個方面的研究工作:(1)針對衛(wèi)星導航欺騙干擾信號仿真時,所使用的傳統(tǒng)寬帶信號高精度延時控制方法存在時域與相關(guān)域延時測量一致性、延時控制復雜度和實現(xiàn)資源消耗難以兼顧的問題,提出了基于NCO相位的寬帶信號高精度延時控制理論和基于Hermite插值的高采樣率基帶信號波形生成方法,并將兩者結(jié)合得到了新的寬帶導航信號延時控制方法。在0.1ns的延時控制精度要求下,所設(shè)計寬帶導航信號高精度延時控制方法具有與可變分數(shù)延時(VFD)濾波器方法相同的時域與相關(guān)域延時測量一致性,與傳統(tǒng)NCO方法同樣低的延時控制復雜度,并且硬件乘法器資源消耗相比VFD濾波器方法大幅減少約91.4%;(2)針對彈載接收終端的欺騙干擾信號仿真過程中,使用傳統(tǒng)分段多項式方法生成彈體接收導航信號的自旋多普勒頻移時,存在模擬參數(shù)更新周期急劇減小,系統(tǒng)運算負荷顯著增加的不足,提出了基于剛體微運動的彈體多普勒頻移模擬生成技術(shù)。通過將微運動和微多普勒頻移引入彈體接收信號的多普勒頻移建模,并以微多普勒頻移自身特性參數(shù)作為模擬生成參數(shù),有效解決了模擬生成自旋多普勒頻移時模擬參數(shù)更新周期過小的問題。對100Hz自旋彈體自旋多普勒頻移模擬生成的仿真分析結(jié)果表明,所提方法可在模擬參數(shù)更新周期為100ms時滿足誤差要求,遠優(yōu)于傳統(tǒng)分段多項式方法要求的小于1ms模擬參數(shù)更新周期;(3)針對目前基于天線陣的欺騙干擾檢測技術(shù)缺乏對陣元陣型要求、檢測算法、檢測性能的詳細分析等問題,采用代數(shù)方法證明了利用陣元間載波相位差無模糊表示信號到達角的陣元陣型要求,提出了基于載波相位雙差高斯二次型的天線陣欺騙干擾檢測技術(shù),以及由最小檢測門限和檢測盲區(qū)限制的檢測性能分析方法。對正三角三元陣檢測性能的數(shù)值分析表明,在載波相位測量精度為0.01周,陣元基線長度為一倍波長,虛警率為0.01時,對任意到達角入射的信號,其欺騙干擾檢測概率小于0.99的檢測盲區(qū)占整個到達角區(qū)域的面積不超過6.7%,可在絕大部分情況下獲得良好的檢測性能;(4)針對當前基于天線運動或天線陣的欺騙干擾檢測技術(shù)硬件及算法實現(xiàn)復雜度高的問題,提出了基于載波相位雙差廣義似然比的旋轉(zhuǎn)天線欺騙干擾檢測技術(shù),可直接利用旋轉(zhuǎn)單/雙天線接收終端輸出的載波相位測量值進行欺騙干擾檢測。在相同的信號入射來向下,以檢測盲區(qū)大小比較天線陣方法與所提旋轉(zhuǎn)天線方法的檢測性能。分析結(jié)果表明,在0.25Hz旋轉(zhuǎn)頻率,0.5倍波長旋轉(zhuǎn)半徑,20秒單次檢測時間下,旋轉(zhuǎn)單天線方法的欺騙干擾檢測性能已經(jīng)優(yōu)于一倍波長基線長度的正三角三元陣,而旋轉(zhuǎn)雙天線在僅1秒的單次檢測時間下最高可相比以上三元陣減小74.6%的檢測盲區(qū)。最后,對論文的研究成果及其工程應用情況進行了總結(jié),并對下一步將要開展的工作進行了展望。論文研究成果已應用于我國自主衛(wèi)星導航系統(tǒng)的仿真測試系統(tǒng)核心設(shè)備與高端接收機的研制等相關(guān)項目中。
[Abstract]:With the wide application of the satellite navigation system in the national economy and the military field, and the rapid development of the electronic technology, the deception jamming has not only become an important threat to the satellite navigation system, but also has the ability to produce disastrous consequences. It can be seen that the research of satellite navigation deception jamming technology has great necessity and urgency. In particular, in the military field, the single antenna or the antenna array receiving terminal mounted on various moving carriers, including the shell, needs to adopt the anti-spoofing technology to ensure the correctness of the output result of the navigation and guidance system during the operation of the carrier. However, it is difficult to carry out the research and test in the actual environment due to the harm of the deception jamming and the complexity of the terminal platform, whether military or civil deception jamming related technology. Therefore, it is of great significance in the theory and engineering to deceive the jamming signal simulation technology as a technology that can provide low-cost, high-precision, configurable and repeatable deception jamming research and test platform. In this background, the following four aspects of research work are carried out aiming at the problems existing in the current deception jamming signal simulation and the deception jamming detection technology: (1) when the satellite navigation deception jamming signal is simulated, the traditional wideband signal high-precision delay control method has the problems that the time domain and the related domain delay measurement consistency, the delay control complexity and the realization of resource consumption are difficult to balance, The high-precision time-delay control theory of wideband signal based on NCO phase and high-sampling-rate baseband signal waveform generation method based on Hermite interpolation are put forward. The high-precision time-delay control method of the designed broadband navigation signal has the same time-domain and relevant domain delay measurement consistency as the variable fractional delay (VFD) filter method under the requirement of the time-delay control precision of 0.1 ns, and the delay control complexity is the same as that of the conventional NCO method, and (2) when a conventional segmented polynomial method is used to generate a spin Doppler frequency shift of an elastic body receiving navigation signal, In this paper, the simulation generating technology of the body-based micro-motion is proposed, which is based on the micro-motion of the rigid body. By introducing the micro-motion and the micro-Doppler frequency shift into the Doppler frequency shift modeling of the body-receiving signal, and using the self-characteristic parameters of the micro-Doppler frequency shift as an analog generating parameter, the problem that the simulation parameter updating period is too small is effectively solved. The simulation results of the simulation of the spin-Doppler shift of the 100 Hz spin-body are shown in this paper. The results show that the proposed method can meet the error requirement when the update period of the simulation parameter is 100ms, which is much better than that of the traditional piecewise polynomial method. (3) In view of the problems such as the lack of the element array type requirement, the detection algorithm and the detection performance of the deception jamming detection technology based on the antenna array, the array type requirement of the arrival angle of the signal arrival angle is proved by using the algebraic method, The invention provides an antenna array deception jamming detection technology based on a carrier phase double-difference Gaussian quadratic form, and a detection performance analysis method which is limited by a minimum detection threshold and a detection dead zone. The numerical analysis of the detection performance of the n-triangle ternary array shows that at the time of the carrier phase measurement accuracy is 0.01 week, the base line length of the array element is one time, the false alarm rate is 0.01, and the signal which is incident on the arbitrary arrival angle is obtained. The detection blind area with the deception jamming detection probability of less than 0.99 accounts for not more than 6.7% of the total arrival angle area, and good detection performance can be obtained in most cases; (4) Aiming at the problem of high complexity of the current detection technology hardware and the algorithm based on the antenna motion or the antenna array, a rotating antenna deception jamming detection technology based on a carrier phase double-difference generalized likelihood ratio is proposed, And the carrier phase measurement value output by the rotating single/ double-antenna receiving terminal can be directly used for cheating and interference detection. The detection performance of the antenna array method and the proposed rotating antenna method is compared by the same signal incidence to detect the blind area size comparison antenna array method. The results of the analysis show that, at a single detection time of 0.25 Hz, a rotation radius of 0.5 times and a single detection time of 20 seconds, the detection performance of the deception jamming of the rotating single-antenna method has been better than that of the positive triangular three-way array with the baseline length of one wavelength. And the rotating dual-antenna can reduce the detection blind area of 74.6% at the highest compared with the three-way array at a single detection time of only one second. Finally, the research results of the paper and the application of the project are summarized, and the work to be carried out in the next step is expected. The research results have been applied to the development of the core equipment and high-end receiver of the simulation test system of our country's autonomous satellite navigation system.
【學位授予單位】：國防科學技術(shù)大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TN967.1;TN97
本文編號：2434007
[Abstract]:With the wide application of the satellite navigation system in the national economy and the military field, and the rapid development of the electronic technology, the deception jamming has not only become an important threat to the satellite navigation system, but also has the ability to produce disastrous consequences. It can be seen that the research of satellite navigation deception jamming technology has great necessity and urgency. In particular, in the military field, the single antenna or the antenna array receiving terminal mounted on various moving carriers, including the shell, needs to adopt the anti-spoofing technology to ensure the correctness of the output result of the navigation and guidance system during the operation of the carrier. However, it is difficult to carry out the research and test in the actual environment due to the harm of the deception jamming and the complexity of the terminal platform, whether military or civil deception jamming related technology. Therefore, it is of great significance in the theory and engineering to deceive the jamming signal simulation technology as a technology that can provide low-cost, high-precision, configurable and repeatable deception jamming research and test platform. In this background, the following four aspects of research work are carried out aiming at the problems existing in the current deception jamming signal simulation and the deception jamming detection technology: (1) when the satellite navigation deception jamming signal is simulated, the traditional wideband signal high-precision delay control method has the problems that the time domain and the related domain delay measurement consistency, the delay control complexity and the realization of resource consumption are difficult to balance, The high-precision time-delay control theory of wideband signal based on NCO phase and high-sampling-rate baseband signal waveform generation method based on Hermite interpolation are put forward. The high-precision time-delay control method of the designed broadband navigation signal has the same time-domain and relevant domain delay measurement consistency as the variable fractional delay (VFD) filter method under the requirement of the time-delay control precision of 0.1 ns, and the delay control complexity is the same as that of the conventional NCO method, and (2) when a conventional segmented polynomial method is used to generate a spin Doppler frequency shift of an elastic body receiving navigation signal, In this paper, the simulation generating technology of the body-based micro-motion is proposed, which is based on the micro-motion of the rigid body. By introducing the micro-motion and the micro-Doppler frequency shift into the Doppler frequency shift modeling of the body-receiving signal, and using the self-characteristic parameters of the micro-Doppler frequency shift as an analog generating parameter, the problem that the simulation parameter updating period is too small is effectively solved. The simulation results of the simulation of the spin-Doppler shift of the 100 Hz spin-body are shown in this paper. The results show that the proposed method can meet the error requirement when the update period of the simulation parameter is 100ms, which is much better than that of the traditional piecewise polynomial method. (3) In view of the problems such as the lack of the element array type requirement, the detection algorithm and the detection performance of the deception jamming detection technology based on the antenna array, the array type requirement of the arrival angle of the signal arrival angle is proved by using the algebraic method, The invention provides an antenna array deception jamming detection technology based on a carrier phase double-difference Gaussian quadratic form, and a detection performance analysis method which is limited by a minimum detection threshold and a detection dead zone. The numerical analysis of the detection performance of the n-triangle ternary array shows that at the time of the carrier phase measurement accuracy is 0.01 week, the base line length of the array element is one time, the false alarm rate is 0.01, and the signal which is incident on the arbitrary arrival angle is obtained. The detection blind area with the deception jamming detection probability of less than 0.99 accounts for not more than 6.7% of the total arrival angle area, and good detection performance can be obtained in most cases; (4) Aiming at the problem of high complexity of the current detection technology hardware and the algorithm based on the antenna motion or the antenna array, a rotating antenna deception jamming detection technology based on a carrier phase double-difference generalized likelihood ratio is proposed, And the carrier phase measurement value output by the rotating single/ double-antenna receiving terminal can be directly used for cheating and interference detection. The detection performance of the antenna array method and the proposed rotating antenna method is compared by the same signal incidence to detect the blind area size comparison antenna array method. The results of the analysis show that, at a single detection time of 0.25 Hz, a rotation radius of 0.5 times and a single detection time of 20 seconds, the detection performance of the deception jamming of the rotating single-antenna method has been better than that of the positive triangular three-way array with the baseline length of one wavelength. And the rotating dual-antenna can reduce the detection blind area of 74.6% at the highest compared with the three-way array at a single detection time of only one second. Finally, the research results of the paper and the application of the project are summarized, and the work to be carried out in the next step is expected. The research results have been applied to the development of the core equipment and high-end receiver of the simulation test system of our country's autonomous satellite navigation system.
【學位授予單位】：國防科學技術(shù)大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TN967.1;TN97
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