JTD800

JTD800四系統主動式天線是一款集全頻段的衛星信號的測量天線，可廣泛應用於大地測量、橋樑施工、海洋測量、水下地形測量等場合。

該天線採用多饋點設計，保證天線相位中心和幾何中心的重合，提高測量的精度。天線單元增益高，方向圖波束寬，確保在一些遮擋較嚴重的場合仍可正常收星。天線帶有多徑扼流板，有效降低多徑對測量精度的影響。內置低雜訊放大模組，通過多級濾波器濾除干擾信號，保證在惡劣電磁環境下正常工作。

JTD800 four-system active antenna is a measurement antenna that integrates satellite signals in all frequency bands, which can be widely used in geodetic surveying, bridge construction, ocean surveying, underwater topographic surveying and other occasions.

The antenna adopts a multi-feed point design to ensure the coincidence of the antenna phase center and the geometric center, and to improve the measurement accuracy. The antenna unit has high gain and wide beam pattern, which ensures that it can still receive satellites normally in some occasions with serious occlusion. The antenna is equipped with a multipath choke plate, which effectively reduces the influence of multipath on the measurement accuracy. The built-in low-noise amplification module filters out interference signals through multi-stage filters to ensure normal operation in harsh electromagnetic environments.