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Antenna Placement in a Mobile Installation

Doppler Systems Blog Frequently we are asked, “What antenna spacing should I use for my mobile antennas?”  This is a good question because many people think that antenna spacing would be critical for good performance and people are surprised when our answer is, “Somewhere between an 1/8 and 1/4 wavelength.”   In this post I’m going to present to you the results from the detailed model of our antennas to show the effect on error of Read more…

Mounting a DF Antenna to the Side of a Tower

Doppler Systems Blog Over the years many of our customers have asked about mounting the DF antenna on the side of a tower or mast. Will it work? The short answer is not very well. We’ve posted the results of some extensive modeling we’ve done to predict the error associated with side mounting the DF array on a tower. To achieve a less than 5 degree peak error at 150 MHz the array must be Read more…

Improved Mapping in TargetTrack

Doppler Systems Blog We released TargetTrack 3.2.0 last week. Several of our users had requested that we improve our bitmap based mapping functions. The previous versions of TargetTrack limited the map file size and the level of zooming. The new version allows for much larger file sizes and considerably more zoom levels. We’ve also added some more map like zooming and panning tools. The bitmap mapping facility in TargetTrack allows our users to make their Read more…

Welcome to Our Blog

Doppler Systems Blog Welcome to the Doppler Systems blog. Our blog will give us the opportunity to keep you up to date on our latest products and software releases as well as offer helpful hints to enable you to use our products more effectively. Thank you for visiting and contact us if we can be of any assistance.