当两接收机交换天线后,于历元t2同步观测相同卫星j、k, 则单差观测方程为: (12) (12)-(2)+△N+△(t2) (12) (12)-n2(2)+△N+△(2 相应的双差观测方程为 V△)=[()-m(2)-m(2)+p(2小+AN-△N S(t1)S(2 S(t2)当两接收机交换天线后,于历元t2同步观测相同卫星j、k, 则单差观测方程为: 相应的双差观测方程为 ( ) ( ) ( ) 1 ( ) ( ) ( ) ( ) 1 ( ) 2 2 2 1 2 2 2 2 2 1 2 2 t t t N f t t t t t N f t t k k k k j j j j = − + + = − + + k k j j k j t = (t ) − (t ) − (t ) + (t ) + N − N 1 ( ) 2 2 2 1 2 2 2 1 2 1 2 S j (t1 ) S k (t1 ) 1 S j (t2 ) S k (t2 ) 2 T1 T2 T1 T2