Appeal No. 1997-1215
Application No. 08/092,684
calculates a first velocity of the receiver from the GPS data
and receives a second velocity of the receiver from an
inertial reference unit within the receiver. Also, Yokouchi
discloses computing a difference between the first and second
velocities and compares this difference to a predetermined
value. The Examiner explains that Yokouchi does not
explicitly disclose the use of carrier phase tracking but this
is found in the APA of the accumulated delta range technique,
and used to improve accuracy. The Examiner also explains that
Yokouchi does not explicitly disclose indicating a cycle slip
error if the velocity difference exceeds a predetermined
error, however, Lapucha suggests that a cycle slip has
occurred based on the comparison of the data collected from
the INS system and GPS system. Thus one of ordinary skill in
the art would have been motivated to utilize the velocity
difference data of Yokouchi as an indication of cycle slip
error. (Answer-pages 3 and 4.)
There is no dispute that all aspects of the claimed
invention can be found in the three references applied in the
rejection (Brief-page 5). However, Appellant contends that
6
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007