Near field monitor for a microwave landing system

Details Near field monitor for a microwave landing system Near field monitor for a microwave landing system

1992-05-04

1993-05-25

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including antenna pattern plotting

H01Q 300

Patent

active

052144356

ABSTRACT:
A microwave landing system, i.e. MLS, monitor utilizes phase conjugate digital signal processing of near field signals in order to provide an accurate estimate of the signal in the far field. Because of the use of phase conjugate processing, this near field monitor can be located close to the MLS antenna without significant error. This is possible because of the unique relationship of the MLS signal modulation frequencies and the near field geometry.

REFERENCES:
patent: 4926186 (1990-05-01), Kelly et al.

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