Past Accomplishments

  1. SBX IDT Antenna Stabilization Design
  2. Satellite Tracking and Phased Array Radar Simulation

Sea-based X-Band Radar (SBX) In-Flight Interceptor Communications Integrated Data Terminal (IDT) Antenna Stabilization Algorithm Design

In January 2003, Dr. Brooks was requested by Northrop Grumman Information Systems of Huntsville, AL to design algorithms to stabilize the SBX IDT antenna to permit precise pointing and tracking  under  severe wave motion conditions expected in the North Pacific.

The role of SBX in the overall NMD Program

The SBX Vessel During Gulf of Mexico Trials

The algorithms and models developed by Dr. Brooks were implemented by NGMS personnel and the antenna system was transported to Johnson Space Center (JSC) in Houston, TX. Harris Corporation  and NGMS personnel mounted the antenna assembly onto the 6-Degree-of-Freedom (6-DOF) table at JSC

Dr. Brooks at Johnson Space Center 6-DOF Table, Antenna Pedestal in Background

The SBX IDT Team

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Satellite Tracking and Phased Array Radar Simulation

BEI, Inc. maintains Matlab-based tools for exoatmospheric state propagation and generic tactical missile trajectory estimation. We are able to combine those tools with radar (phased array and parabolic dish) simulation tools to provide a complete assessment of any tactical scenario. The computational tools can be supplemented with powerful visualization capabilities to further enhance the final product. An example of this is the calibration of precision phased array radars with high-accuracy ephemeris satellites.

A number of precision ephemeris satellites are used for geodesy and sensor calibration purposes. A central repository of these data can be found at the Crustal Dynamics Data Information System (CDDIS).  The Satellite Laser Ranging (SLR) data sets can be found here.  The value of the SLR data to the calibration of a phased array radar is illustrated below.  Given that the position of (for example) the EGP/Ajisai satellite (NORAD identifier  16908) is known within a few centimeters, a phased array radar which is tracking the satellite can be calibrated for misalignment in roll, pitch and yaw, and also errors in geolocation very precisely. 

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Dr. John W. Brooks
Copyright 2006  [Brooks Enterprises International, Inc]. All rights reserved.
Revised: 01/09/12.