Changes

Place and connect all the parts as shown in the figure below. The signal of the chirp generator is split into two equal parts using an '''Ideal Splitter Block''', one of which is amplified by the power amplifier '''Gain Block''' PA with a gain of 5e+3 and then goes to a 50&Omega; matched antenna load called RL. The received signal at the receiver antenna is modeled here using a voltage-controlled voltage source (VCVS) E1, which is dependent on the voltage at Node 3. i.e. the antenna load, with and a proportionality constant of 1e-4. The highly attenuated signal also goes through an '''Ideal Delay Radar Echo Block''' with X3. This block simulates the effect of signal reflection from a target. It cause a specified delay of 10&mu;sits input signal (transmitted signal) as well as its attenuation. This dealy time corresponds to a The figure below shows the property dialog of the Radar Echo Block. Set the target range equal to 1500m, the frequency fo to 1GHz and keep the default value of R = c&tausigma;/2 = 1.5&times;101m³²m = 1for the targets radar cross section (RCS).5km  <table><tr><td>[[File:SysTUT7 21.png|thumb|550px|The property dialog of the Radar Echo Block.]]</td></tr></table>  The controlled source E1 is dependent on the voltage at Node 3. i.e. the antenna load and creates an exact replica of it to feed into the echo block. In other words, Node 5 6 indeed represents the receive antenna, or the receiver's entry point. The received signal is amplified at by the low-noise amplifier (LNA), which is modeled by a '''Gain Block''' A1 LNA with a gain of 50005e+3. This signal is then mixed with the other half of the transmitted split chirp signal using the '''Multiplier Block''' A2MIX. The down-converted signal is then amplified once more by A3 the '''Gain Block''' AMP with a gain of 50 and is passed through a generic lowpass filter block with a cutoff frequency of 2MHz.