finding altitude using matlab atmosisa given pressure

6 次查看（过去 30 天）
Irfan
Irfan 2024-10-20
回答： Sam Chak 2024-10-20
hello, im trying to determine altitude using matlab atmosisa function, given P = 61.7*1000;
What is the best way to go about solving this, thank you.
matlab atmosisa function
[T,a,P,rho,nu,mu] = atmosisa(height)
% given
p = 61.7*1000; % pascal

请先登录，再回答此问题。

采纳的回答

Sam Chak
Sam Chak 2024-10-20
Ran in:
Hi @Irfan
You can use this minimization approach.
altitude = ga(@costfun, 1, [], [], [], [], 3.9e3, 4e3)
ga stopped because the average change in the fitness value is less than options.FunctionTolerance.
altitude = 3.9926e+03
%% Check result
[~, ~, P, ~, ~, ~] = atmosisa(altitude)
P = 6.1700e+04
%% Cost function
function J = costfun(height)
[~, ~, P, ~, ~, ~] = atmosisa(height);
p = 61.7*1000;
J = (P - p)^2;
end

更多回答（1 个）

Walter Roberson
Walter Roberson 2024-10-20
You use the equation given in https://en.wikipedia.org/wiki/Pressure_altitude
Make sure you convert pascal to millibars .

类别

在 Help Center 和 File Exchange 中查找有关 Curve Fitting Toolbox 的更多信息

标签

产品


版本

R2024a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by