Nghiên cứu ảnh hưởng của hiện tượng đa đường truyền đến trị đo GPS

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Một trong những nguồn sai số cơ bản trong các trị đo GPS là sai số do hiện tượng đa đường truyền (Multipath). Hiện tượng này xẩy ra do sự phản xạ tín hiệu từ các địa vật ở quanh máy thu. Việc nhiều tín hiệu từ một vệ tinh đi đến ăng ten máy thu sẽ gây ra sự giao thoa của các tín hiệu này. Tín hiệu vệ tinh có góc nghiêng E càng nhỏ càng nhạy cảm với hiện tượng đa đường truyền.  

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