Left: horizontal size; right: vertical size experiments, the prior information is given by the beam profile and the position and size of the target. Vertex finding methods can be roughly divided into three main types: generic clustering algorithms, topological methods, and iterated estimators. The...
For which value(s) of {eq}\theta {/eq} is the line tangent to the curve {eq}r=1+1\sin(2\theta) {/eq} a horizontal line? Step 1:In order to describe the polar curve's first or second derivatives in te...
This does not quite solve the problem we posed, because we have not dealt with the requirement that points be above or below the segment s, only that they be above or below the line containing s. To solve this we sort the points by their horizontal projections. As well as building an ...
As will be appreciated the possible horizontal bearing values θ, which can be calculated from the phase difference across a single wide aperture are given by the solutions to the equation: sin θ=[(p+n)/d] where p is the phase difference measured in wavelengths of the received signal, ...
Since we are interested in horizontal line segments of length T¯, we can use the partitioning of R and the value of T¯ to define a placement space. Let the left endpoint of a horizontal line segment of length T¯ be its reference point. The Minkowski sum of the parallelogram grid...
(Parameter t is often spoken of as the "time" on the curve.) The curves are "normal" in the sense that they have no inflections or horizontal or vertical tangents. Nevertheless, the two curves intertwine such that they intersect in 4 singular locations. Straight line segments join each ...
In a Doppler-based direction finding system, the antenna can be imagined as rotating at constant speed in a horizontal plane as shown in the drawing below. The circular motion of the antenna (A) induces a sinewave frequency modulation (fm) in the received signal (fc). This effect is ...
For which value(s) of θ is the line tangent to the polar curve r=1 a horizontal line? 2. For which value(s) of θ is the line tangent to the polar curve r=1 a vertical line? 3. For which value(s...
Therefore, when the base-line is reduced by an amount proportional to the reduction of lateral horizontal displacement of the focal plane range-marks, the apparent range of the range-mark indication remains equal to the apparent range of any target in the field-of-view. Also, the vertical mot...
Line 54 is a tangent to the spherical surface at the ground bounce inflection point and the FIG. 2 depiction is oriented such that line 54 is also horizontal for ease of discussion. HP is the height of the first aircraft above and perpendicular to line 54. HT is the height of the ...