diff options
Diffstat (limited to '3773/CH17/EX17.4')
| -rw-r--r-- | 3773/CH17/EX17.4/Ex17_4.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/3773/CH17/EX17.4/Ex17_4.sce b/3773/CH17/EX17.4/Ex17_4.sce new file mode 100644 index 000000000..852718927 --- /dev/null +++ b/3773/CH17/EX17.4/Ex17_4.sce @@ -0,0 +1,21 @@ +//Chapter 17: Antenna Temperature, Remote Sensing and Radar Cross Section +//Example 17-2.2 +clc; + +//Variable Initialization +phy_aper = 2208 //Physical aperture (m^2) +f = 1415e6 //Frequency (Hz) +aper_eff = 0.54 //Aperture efficiency (unitless) +Tsys = 50 //System temperature (K) +bw = 100e6 //RF Bandwidth (Hz) +t_const = 10 //Output time constant (s) +sys_const = 2.2 //System constant (unitless) +k = 1.38e-23 //Boltzmann's constant (J/K) + +//Calculations +Tmin = sys_const*Tsys/(sqrt(bw*t_const)) //Minimum detectable temperature(K) +eff_aper = aper_eff*phy_aper //Effective aperture (m^2) +Smin = 2*k*Tmin/eff_aper //Minimum detectable flux density (W/m^2/Hz) + +//Result +mprintf("The minimum detectable flux density is %.1e W/m^2/Hz" ,Smin) |