Accession Number:

AD0759901

Title:

Improved Moving-Target-Indicator Filtering for Phased Array Radars

Descriptive Note:

Technical rept.

Corporate Author:

ARMY MISSILE COMMAND REDSTONE ARSENAL AL ADVANCED SENSORS DIRECTORATE

Report Date:

1973-03-28

Pagination or Media Count:

22.0

Abstract:

A technique is described for using recursive digital filters in the moving target indicator of phased array radars. This technique, called initialization, is effective in reducing the severe transient effects normally exhibited by these filters for large clutter input signals. Consequently, the superior frequency characteristic of recursive filters can be realized. The problem is addressed from the state variable point of view and a general initialization expression is derived. This procedure is illustrated for example filters, and typical moving target indicator output sequences are shown. The concept of dynamic frequency response is introduced and used to demonstrate the effectiveness of initialization for moving target indicator input sequences of varying length.

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE