ENHANCED TIME OF ARRIVAL METHOD
Assignee
SANCONIX, INC.
Filed
Jun 6, 1995
Granted
Jun 9, 1998
Location
NEW ORLEANS LA US
Abstract
A method for improving a radio location system based on time-of-arrival. Time-of-arrival radio location systems are limited in ultimate accuracy by signal-to-noise ratio and by the time varying multipath environment in which they must operate. The present invention teaches techniques which maintain a high signal-to-noise ratio while identifying a feature of the received signal which is least affected by multipath. The technique uses correlation peak/envelope information to estimate the leading edge of the correlation function, then enhances discrete samples at the leading edge of the correlation function to yield high signal-to-noise ratio readings. The present invention can reduce required transmitted bandwidth, increase system resolution and accuracy by twenty to one, and maintain high message traffic throughput.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
May 29, 1996
Rescinded
Jul 11, 1996
Duration
1 month
Inventor
- 1H. BRITTON SANDERFORD
Record Details
- Patent number
- US 5764686
- Application
- 08470768
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records