Abstract
In this chapter, two passive detection methods of long baseline fixed
bistatic are presented based on the short baseline composite array. The first method is
a two-station phase differential direction method with a long baseline. Direction
finding and ranging are realized at each station using short baseline phase difference
measurement technology. The path difference between two stations is obtained by
using the radial distance measured by the two stations, respectively. On this basis,
using the midpoint direction finding solution of a single basis, the phase differential
direction finding formula of two stations with long baseline can be given directly. The
second method is a method that uses a similar recursive method to implement the long
baseline multi-station passive detection based on phase difference measurement
without ambiguity. The similar recursion method is a method to obtain the long base
path difference by using the similarity of triangles according to the path difference of
short base line array, and then construct the virtual three-station linear array, from
which the location calculation can be carried out directly by using the ranging formula
of the double base array. It may be a feasible method to construct a long baseline
multi-station phase difference detection system using a short baseline composite
array.