A novel noncoherent approach,based on multi-symbol accumulation-to-PN code acquisition and digital matched filters(DMFs),was proposed to solve the problem.

• 它在传统单次驻留算法的基础上,用多码元累加来提高码相位判决量的信噪比,从而大大降低了低输入信噪比和低恒虚警约束下的平均捕获时间。