SATELLITE SEARCH METHOD AND RECEIVER USING THE SAME
First Claim
Patent Images
1. A satellite search method comprising steps of:
- (a) providing a candidate satellite list containing a plurality of satellites;
(b) calculating mean visibility of each satellite listed in the candidate satellite list for possible time samples in view of an observation location;
(c) selecting a satellite from the candidate satellite list according to the mean visibility of each satellite listed in the candidate satellite list;
(d) searching the selected satellite to obtain a search result;
(e) eliminating at least one time sample from the possible time samples according to the search result; and
(f) repeating steps (b) to (e).
1 Assignment
0 Petitions
Accused Products
Abstract
A satellite time dynamic search method and a receiver implementing such a method are disclosed. In the present invention, a predetermined period of time is sampled into multiple time samples. The time samples are sieved according to a search result of a satellite selected from candidate satellites each time. By repeatedly doing so, the finally remaining time sample will approach a true satellite system time, and accordingly the candidate satellites converge to the most possible ones as to facilitate satellite search.
-
Citations
20 Claims
-
1. A satellite search method comprising steps of:
-
(a) providing a candidate satellite list containing a plurality of satellites; (b) calculating mean visibility of each satellite listed in the candidate satellite list for possible time samples in view of an observation location; (c) selecting a satellite from the candidate satellite list according to the mean visibility of each satellite listed in the candidate satellite list; (d) searching the selected satellite to obtain a search result; (e) eliminating at least one time sample from the possible time samples according to the search result; and (f) repeating steps (b) to (e). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A receiver for receiving and processing satellite signals to conduct a satellite search, the receiver comprising:
-
a correlation block for correlating the satellite signals with a code of a satellite so as to search the satellite; and a navigation processor for controlling the correlation block, wherein the navigation processor provides a candidate satellite list containing a plurality of satellites, calculates mean visibility of each satellite listed in the candidate satellite list for possible time samples in view of an observation location, instructs the correlation block to search a satellite which is selected according to the mean visibility of each satellite to obtain a search result, and eliminates at least one time sample from the possible time samples according to the search result. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification