Kratos Defense & Security Solutions has patented a satellite tracking system using a three-point peaking technique and Kalman filter to determine satellite direction. The method involves rotating the antenna, measuring signal levels, and using a quadratic function to estimate satellite position. The system allows for accurate satellite tracking at any time. GlobalData’s report on Kratos Defense & Security Solutions gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Kratos Defense & Security Solutions, Drone jamming technology was a key innovation area identified from patents. Kratos Defense & Security Solutions's grant share as of April 2024 was 69%. Grant share is based on the ratio of number of grants to total number of patents.
Satellite tracking system and method using three-point peaking technique
A recently granted patent (Publication Number: US11947025B2) discloses a method and apparatus for tracking a satellite signal source using an antenna. The method involves determining the direction of the antenna to receive a maximum signal level from the satellite by rotating the RF axis of the antenna through predetermined measurement angles, measuring signal levels at each angle, and using a quadratic function to determine the optimal angular position for maximizing the signal. This process is repeated in orthogonal planes to obtain multiple angular positions, which are then submitted to a Kalman filter to estimate the position of the satellite. The method also includes linear extrapolation to estimate future signal source positions based on previous data.
The apparatus described in the patent includes an antenna drive, a receiver, and a controller that work together to track the satellite signal source. The controller retains measured signal levels and corresponding angular positions, determines optimal angular positions using a quadratic function, and submits the data to a Kalman filter for position estimation. The controller also periodically submits angular positions above a noise threshold to the Kalman filter and generates predicted azimuth and elevation for the antenna. Additionally, the controller can estimate future signal source positions through linear extrapolation and continuously update these estimates using the Kalman filter. Overall, the method and apparatus outlined in the patent provide a comprehensive system for accurately tracking satellite signals and estimating satellite positions for various applications.
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