TY - GEN
T1 - GPS positioning method under condition of only three acquired satellites
AU - Nomura, Masashi
AU - Tanaka, Toshiyuki
AU - Yonekawa, Masashi
PY - 2008/12/1
Y1 - 2008/12/1
N2 - To measure a position by GPS, observing more than three satellites is needed. If there are not obstacles near a receiver, more than three satellites are generally observed and the position is located. However, in an urban canyon or forest, more than three satellites can not be frequently acquired because of buildings and trees. Then we suggest a new algorithm for positioning using only three satellites. When only three satellites are observed, data for positioning is not enough. Therefore we use consecutive data and measure a position. Other methods using only three satellites usually need past data of receiver such as the position or data other than received data from satellites. However our method needs not other data and has only to fix a receiver for a few seconds. In this paper, we showed the effectiveness of our method using a dual frequency receiver and received data from satellites whose elevation angles are high.
AB - To measure a position by GPS, observing more than three satellites is needed. If there are not obstacles near a receiver, more than three satellites are generally observed and the position is located. However, in an urban canyon or forest, more than three satellites can not be frequently acquired because of buildings and trees. Then we suggest a new algorithm for positioning using only three satellites. When only three satellites are observed, data for positioning is not enough. Therefore we use consecutive data and measure a position. Other methods using only three satellites usually need past data of receiver such as the position or data other than received data from satellites. However our method needs not other data and has only to fix a receiver for a few seconds. In this paper, we showed the effectiveness of our method using a dual frequency receiver and received data from satellites whose elevation angles are high.
KW - GPS (Global Positioning System)
KW - Positioning method
KW - Urban environment
UR - http://www.scopus.com/inward/record.url?scp=56749132930&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=56749132930&partnerID=8YFLogxK
U2 - 10.1109/SICE.2008.4655266
DO - 10.1109/SICE.2008.4655266
M3 - Conference contribution
AN - SCOPUS:56749132930
SN - 9784907764296
T3 - Proceedings of the SICE Annual Conference
SP - 3487
EP - 3490
BT - Proceedings of SICE Annual Conference 2008 - International Conference on Instrumentation, Control and Information Technology
T2 - SICE Annual Conference 2008 - International Conference on Instrumentation, Control and Information Technology
Y2 - 20 August 2008 through 22 August 2008
ER -