n = noise factor = .2 (correspond to SNR of -10dB for received signal)
sampfreq = sampling frequency = (20*(10 ^6)) Hz
The sampfreq value of 20*(10^6) Hz was given in"Computer-Based Exerciese for Signal Processing Using MATLAB"by Burrus [ et al.] as an example sampling frequency to use
The paramter"Time Delay"(i.e. TD) is the amount by which the user wants to shift his vector by (i.e. not units of time)
The max range that could be accounted for according to equations based in
"Approach for Range" module was 8190 meters (8.2 kilometers)
The starting value of the past two graphs are at n = 1
Analysis of results
Overall result of test cases given by a graph of the %error of the range approximation compared to"
radar "from"Computer-Based Exerciese for Signal Processing Using MATLAB"by Burrus [ et al.] (see pages 328-329 for definition of parameters and function)
%errorinrange2
%errorinrange2
Method of error calculation
The % error was calculated by first taking the returned value for range from our developed program and using that as an input to the"
radar "function from Burrus [ et al.]. The resulting waveform generated is then put through the same match filter as our simulated received wave. A comparison of the location of the 1st peaks is then done and the absolute value of the difference is taken. The value is then divided by the difference from the right most edge of"
radar "'s first chirp to the end of the signal.
Comment on % error
The % error increased in a direct proportional to however larger we made the new TD value. Thus, if a shift of TD=900 was applied, the % error was 9 times greater than in test case 5 ( TD = 100), it was in fact about 55.89%.
Where to next
Next, look at
"RADAR:Velocity Analysis" as next step.
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