Single-station passive quick positioning method based on least square method
A technology of least square method and positioning method, which is applied in the field of signal processing, can solve the problems of long signal stabilization period, long accumulation time, enhanced coherence of reconnaissance and acquisition signals, etc., and achieve the effect of shortening positioning time, fast positioning and improving positioning accuracy
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[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0042] refer to figure 1 , the specific implementation steps of the present invention are as follows:
[0043] Step 1. Obtain a baseband signal.
[0044] The invention adopts the reconnaissance equipment that moves in a straight line at a uniform speed, and performs instantaneous frequency measurement and direction measurement on the received signal to obtain the frequency measurement result and direction finding results and use the frequency measurement results Perform frequency mixing to eliminate the carrier frequency to obtain the baseband signal u r (t), the frequency measurement error requirement is low, less than 1MHz.
[0045] Step 2, accumulating baseband signals.
[0046] For baseband signal u r (t) Accumulate, that is, store the baseband signal obtained by each frequency mixing, and accumulate a set of baseband signals:
[0047] u r1 (t),...
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