Measurements of azimuth and distance using arbitrary configurations of sensors with unknown coordinates in two dimensions
Abstract
In two dimensional space, a unique solution can be found for the determination of the azimuth and distance of unknown sources by means of the measurement of time delays from an arbitrary configuration of sensors whose exact coordinates are unknown. A typical example is the deployment of sonobuoys. Significant simplification is obtained when the sensorsource distance is infinite. For the case of finite distance, an iterative procedure is required, using as initial conditions the distances of the different sensors with respect to a reference sensor, but not their relative directions or relative distances. The accuracy is better the closer the sources are with respect to the reference sensor. Iterative methods are also presented for identifying the deformation of an antenna, using narrowband processes.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 July 1981
 Bibcode:
 1981STIN...8219403B
 Keywords:

 Azimuth;
 Radar Detection;
 Rangefinding;
 Sonar;
 Tracking (Position);
 Tracking Networks;
 Antenna Radiation Patterns;
 Bandwidth;
 Iterative Solution;
 Sonobuoys;
 Stochastic Processes;
 Time Lag;
 Communications and Radar