Chengdu Astranav Technology Co., Ltd., established in 2019, is a high-tech enterprise focusing on providing high-performance and cost-effective high-precision and anti-jamming satellite positioning equipment.
Chengdu Astranav Technology Co., Ltd., established in 2019, is a high-tech enterprise focusing on satellite navigation equipment R&D and manufacturing.
Satellite navigation uses artificial satellites for positioning, navigation and timing. BeiDou is China's global navigation satellite system providing high-precision positioning services.
卫星导航接收机的核心挑战:在 -130dBm 的微弱信号和无处不在的电磁干扰之间做出选择。 **现实场景:** 一架无人机在距离 5G 基站 200 米处飞行。基站发射功率 +46dBm,GPS L1 信号 -130dBm。信号与干扰的功率差高达 **176dB**。 没有高性能射频滤波器,接收机前端会被基站信号直接饱和,卫星信号完全"淹没"。 **滤波器在接收链路中的位置与作用:** ``` 天...
卫星导航信号到达地面的功率极低(约 -130dBm),相当于一个 25W 灯泡在 20000 公里外的亮度。在这种极端条件下,任何有意或无意的电磁干扰都可能导致接收机失锁。 抗干扰天线通过**阵列天线 + 自适应信号处理**,在干扰方向形成"零陷",同时保持对卫星方向的增益,实现**空域滤波**。这是当前最有效的卫星导航抗干扰手段。 **典型干扰源:** - 民用:通信基站(4G/5G)、广播电台...
FBar(Film Bulk Acoustic Resonator,薄膜体声波谐振器)滤波器是射频前端的关键器件,利用压电薄膜的体声波谐振效应实现频率选择。与传统的 SAW(声表面波)滤波器相比,FBar 滤波器在频率、功率容量和温度稳定性方面具有显著优势。 在卫星导航接收机中,FBar 滤波器承担着"信号守门员"的角色——从天线接收到的复杂电磁环境中,精确筛选出 BDS B1(1561MHz)、...
Prices vary by model and features. Please contact us for detailed quotation. We offer products at various price points.
Depending on the model, anti-jamming range varies from 30 to 100 meters. Please consult our technicians for specific parameters.
Our products support global mainstream satellite navigation systems including BeiDou, GPS, GLONASS, and Galileo.
Yes, we provide pre-sales consultation, after-sales technical support and customized solutions.
四川省成都市高新区天府大道北段1700号
刘先生 15228880826
osirissword@163.com
周一至周五:9:00 - 18:00