Design of high-sensitivity receiver tracking loop
OU Chun-xiang · Modern Electronics Technique · 2013
Based on development and industrialization projects of GPS / BD compatible high-sensitivity navigation product,the classic carrier tracking loop is modified in this paper to achieve high-sensitivity tracking loop.The key idea is to transform the traditional single-point integration data into a string data.After FFT transformation of the data,the estimation accuracy of the carrier frequency can be improved,thereby increasing the system tracking sensitivity.The high-sensitivity tracking loop is al so analyzed and simulated in this paper to prove its tracking capacity for tracking weak signals.