应答器安装角度偏差对传输性能的影响研究

Study on Influence of Balise Installation Angular Deflection on Transmission Performance

应答器安装时的角度偏差影响射频能量信号的接收和上行链路信号的发送,因此有必要研究应答器角度偏差对其传输性能的影响。分析了应答器A接口传输过程,分别建立了应答器倾斜、俯仰和侧转时的上行链路发送模型和射频能量接收模型。确定了上行链路场和射频能量场一致性评估方法,利用模型对应答器角度偏差进行了一致性评估。建立了应答器A接口传输过程,计算出应答器的有效作用范围。研究结果表明,对于标准尺寸,应答器倾斜角在(-2°28′,+2°28′)范围内,俯仰角在(-4°40′,+4°40′)范围内,侧转角(-7°25′,+7°25′)范围内时,满足应答器A接口一致性要求;应答器安装倾斜角、俯仰角越大,应答器的有效作用距离越小。应答器安装侧转角越大,应答器的有效作用距离越大。

As angular deflection during balise installation affects the reception of tele-powering signals and the transmission of up-link signals,it is necessary to study the influence of balise angular deflection on the transmission performance.In this paper,the transmission process of Interface A of the balise was analyzed.The uplink transmitting model and the tele-powering receiving model were established to target cases when the balise tilted,pitched and yawed.After the determination of the conformity assessment methods of tele-powering field and up-link field,the conformity of balise angular deflection was evaluated using these models.Based on the establishment of the transmission process for Interface A of the balise as well as the calculation of the effective range of balise,the location accuracy of the balise was evaluated.The results indicated that the conformity requirements of Interface A of standard size balise were met when the tilt angle,pitch angle and yaw angle were within the range of（-2°28′,＋2°28′）,（-4°40′,＋4°40′）and（-7°25′,＋7°25′）respectively.The larger the tilt angle or pitch angle,the smaller the effective range of balise.The larger the yaw angle,the greater the effective range of balise.