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Fix markdown in readme.md

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Jon Beniston 2021-10-12 12:49:48 +01:00
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plugins/channelrx/radioastronomy/readme.md
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@ -34,10 +34,10 @@ In radio astronomy it is common to use noise temperatures rather than power, via
Where: Where:
T is the noise temperature in Kelvin - T is the noise temperature in Kelvin
P is power in Watts - P is power in Watts
k is Boltzmann's constant - k is Boltzmann's constant
B is bandwidth in Hertz - B is bandwidth in Hertz
Similarly, for low frequencies (where the Rayleigh-Jeans approximation is valid), brightness temperatures are used rather than intensity: Similarly, for low frequencies (where the Rayleigh-Jeans approximation is valid), brightness temperatures are used rather than intensity:
@ -45,11 +45,11 @@ Similarly, for low frequencies (where the Rayleigh-Jeans approximation is valid)
Where: Where:
Tb is the brightness temperature in Kelvin - Tb is the brightness temperature in Kelvin
e is the emissivity of the source - e is the emissivity of the source
Iv is the intensity of the source (power per unit solid angle at the frequency v) - Iv is the intensity of the source (power per unit solid angle at the frequency v)
c is the speed of light - c is the speed of light
v is the frequency in Hertz - v is the frequency in Hertz
This can be convenient, as if a large astronomical source completely fills the antenna beam with a uniform brightness temperature, This can be convenient, as if a large astronomical source completely fills the antenna beam with a uniform brightness temperature,
there will be an equal increase in the noise temperature measured by the receiver. there will be an equal increase in the noise temperature measured by the receiver.
@ -82,11 +82,11 @@ than the random variations in the total noise (sigma_Tsys). The length of time a
Where: Where:
sigma_Tsys = Standard deviation / RMS of system noise temperature. - sigma_Tsys = Standard deviation / RMS of system noise temperature.
Tsys is system noise temperature. - Tsys is system noise temperature.
B is bandwidth in Hertz. - B is bandwidth in Hertz.
tau is the integration time in seconds. - tau is the integration time in seconds.
deltaG/G is the receiver gain variation. - deltaG/G is the receiver gain variation.
<h2>Settings</h2> <h2>Settings</h2>
@ -182,9 +182,9 @@ If the link button is checked, Tgal is calculated using:
Where: Where:
25.2 is the 50th percentile of the all-sky distribution temperature. - 25.2 is the 50th percentile of the all-sky distribution temperature.
f is the center frequency. - f is the center frequency.
f0 is 408MHz. - f0 is 408MHz.
Tgal is used in calibration to estimate Tsp. Tgal is used in calibration to estimate Tsp.
@ -205,9 +205,9 @@ If the link button is checked, Tatm is calculated using:
Where: Where:
Tair is the surface air temperature from (18). - Tair is the surface air temperature from (18).
tau_z is the zenith opacity from (19). - tau_z is the zenith opacity from (19).
el is the elevation of the antenna from (20) - el is the elevation of the antenna from (20)
<h3>18: Tair</h3> <h3>18: Tair</h3>
@ -432,7 +432,7 @@ When checked, the Gaussian fitting tools are displayed. These allow a Gaussian t
![Gaussian Fit](../../../doc/img/RadioAstronomy_SpectrumGaussian.png) ![Gaussian Fit](../../../doc/img/RadioAstronomy_SpectrumGaussian.png)
<h3>Display Markers<h3> <h3>Display Markers</h3>
When checked, the marker table is displayed and the user may place two markers (M1 and M2) on the chart for accurate display of the corresponding values. When checked, the marker table is displayed and the user may place two markers (M1 and M2) on the chart for accurate display of the corresponding values.
@ -611,7 +611,7 @@ Displays statistics calculated across all measurements (not just those visible o
When checked, the Gaussian fitting tools are displayed. These allow a Gaussian to be fitted to the data, allowing measurement of the HPBW of the antenna. When checked, the Gaussian fitting tools are displayed. These allow a Gaussian to be fitted to the data, allowing measurement of the HPBW of the antenna.
<h3>Display Markers<h3> <h3>Display Markers</h3>
When checked, the marker table is displayed and the user may place two markers (M1 and M2) on the chart for accurate display of the corresponding values from the measurement series. When checked, the marker table is displayed and the user may place two markers (M1 and M2) on the chart for accurate display of the corresponding values from the measurement series.