Title

Effect Of Phasing-Sector Angular Extent In Fm Reticles

Keywords

Frequency modulation; Phase modulation; Reticles

Abstract

A technique is presented for increasing the useful power of the FM modulation signal from a spinning FM reticle with a phasing sector. Spinning FM reticles often determine a target location by using a combination of a phasing sector to establish the angular target location and a radial frequency variation to establish the radial target location. Typically, the phasing sector of this reticle type consists of a semicircular transmissive sector with the other semicircular sector which provides FM modulation. The power of the FM modulation signal is increased by matching the phased-sector geometry to the size that corresponds to the period of the modulation frequency. This type of reticle is compared and contrasted with the more typical semicircular phasing-sector reticle in both the time and frequency domains. © 1992 Optical Society of America.

Publication Date

1-1-1992

Publication Title

Applied Optics

Volume

31

Issue

22

Number of Pages

4578-4581

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.31.004578

Socpus ID

84889173558 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84889173558

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