一种适用于封闭场景下的遥测信号接收方法

A method of telemetry receiver in enclosed scenarios

摘要:

常规的遥测信号接收多是在开阔场景进行，被测对象除了在起飞或降落时短暂低仰角，大部分时间其信号是视距传输，其遥测信道近似于高斯白噪声信道。随着遥测应用场景的逐步扩展，封闭场景下的遥测需求逐步被提出， 应用模式和信道条件发生了巨大变化。针对某封闭场景，分析常规遥测接收方法存在的一些问题，提出一种双天线加盲均衡的分集合成和接力接收方案，有效解决了封闭场景下的遥测信号中断问题。方案成功应用于某测试系统，实测结果表明，方案能够极大提升遥测系统的健壮性。

Abstract:

Conventional telemetry are mostly applied in outside scenes. Usually, it is line of sight transmission, except for the scene of low elevation reception for a short time in the process of takeoff or landing, and the property of transmission channel is similar to the Gaussian White Noise channel. With the development of telemetry applications, telemetry in enclosed scenario is required. The application mode and channel conditions have changed greatly. Aimed at enclosed application, the challenges of telemetry receiver are analyzed. A new scheme of diversity and relay reception based on Dual-antenna and blind equalization is proposed. The problem of telemetry link interruption in this scenario is solved effectively. The scheme has successfully put into practice. The experimental results show that the proposed scheme can greatly improve the stability of the telemetry system.