- TITLE:
-
The Fundamental Input/Output Structure of a Linear,
Time-Varying Array Receiver
- AUTHORS:
- J. O. Coleman
- ABSTRACT:
- A single-output array receiver based on static antenna
elements of arbitrary geometry that drive linear,
time-invariant signal processing is well known to be
fully characterized by a frequency response dependent
on direction-of-arrival (DOA). This paper develops
the generalized characterization that results when the
time-invariance requirement is removed. The special
case based on periodically varying signal processing
is further derived and shows such a system to be
fundamentally, structurally incapable of realizing a
long-sought goal in navigation engineering: a
frequency shift smoothly dependent on DOA.
Self-contained developments of time-varying
continuous-time linear systems and of a 4D
Fourier-transform view of propagating electromagnetic
waves are given in the appendices.
- DOWNLOADABLE PREPRINT:
-
PDF (143 Kbytes),
- STATUS:
- Presented to the 2010 IEEE International Symposium on Phased Array Systems &
Technology, Boston MA, USA,
Oct. 12-15, 2010.
- DATE OF ENTRY:
-
October 2010.