Title :
Advanced adaptive null steering concepts for GPS
Author :
Zoltowski, Michael D. ; Gecan, Anton S.
Author_Institution :
Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
The problem of protecting the GPS signal from interference is addressed. A number of null steering techniques for use in conjunction with antenna arrays are compared and contrasted in terms of efficient use of available degrees of freedom and computational complexity. The techniques investigated range from the simple well known power minimization approach to a subspace constrained power minimization method that makes use of DOA estimates provided by a 2D version of ESPRIT. Limitations of the methods are addressed as well
Keywords :
Global Positioning System; adaptive antenna arrays; adaptive signal processing; computational complexity; direction-of-arrival estimation; interference suppression; minimisation; satellite antennas; 2D ESPRIT; DOA estimates; GPS; adaptive null steering; antenna arrays; computational complexity; degrees of freedom; interference protection; power minimization; subspace constrained power minimization method; Antenna arrays; Dipole antennas; Direction of arrival estimation; Global Positioning System; Horn antennas; Interference; Microstrip antenna arrays; Microstrip antennas; Protection; Satellites;
Conference_Titel :
Military Communications Conference, 1995. MILCOM '95, Conference Record, IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-2489-7
DOI :
10.1109/MILCOM.1995.483688
