多点定位中A/C模式混叠信号的时域分离算法  

Separating Algorithm of A/C Garbles in Time Domain for Multilateration

作　　者：王洪[1] 黄荣顺[2] 徐自励[2] 

机构地区：[1]电子科技大学电子工程学院,成都611731 [2]中国民用航空局第二研究所,成都610041

出　　处：《电子科技大学学报》2013年第6期848-851,共4页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金面上项目(61079006);国家自然科学基金重点项目(61139003)

摘　　要：多点定位是空中交通管制的新兴技术,抗干扰技术是多点定位系统走向实用的关键。针对多个目标发射信号的混叠问题,在分析A/C模式混叠信号时域特征和规律的基础上,定义了脉冲重叠度和脉冲描述字,并将混叠信号的分离归结为其子脉冲的分离和归位。再根据混叠子脉冲的脉宽、幅度、相位等特征,提出了混叠子脉冲的分离方法,进而实现了整个A/C模式脉冲串的解混叠。仿真验证了算法的有效性。Multilateration is a new technology in air traffic control. Anti-jamming technology is important for multilateration systems. Signals for different targets will generate garbles which are main jamming in multilateration. This paper analyzes the features and laws of A/C garbles in time domain, defines pulse aliasing degree and pulse description words, and proposes a new algorithm to separate the aliasing pulses in time domain according to pulse width, amplitude and phase. The A/C transponders are separated totally after sub-pulses are cleared. At last, simulations show the efficiency of proposed algorithm.

关 键 词：空中交通管制 混叠 A C模式 多点定位 时域分离 

分 类 号：TN967.5[电子电信—信号与信息处理]