GUISDAP version 1.65 update notes

 

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GUISDAP version 1.65 update notes

 

The major new feature in the GUISDAP version 1.60 is the inclusion of the design package and the capability to analyze the ESR initial test experiments. Smaller improvements are done thoughout the code.

The installation guide instructs in the installation.

The most important changes are described below.

Separate ESR and KST versions

Routines dealing with data input need to be separate for the old EISCAT (referenced as KST) and for the EISCAT Svalbard radar (ESR). The source code is divided into three different directories: m165, m165KST and m165ESR.

m165 can be used alone or with one of the other two. Depending on the combination, GUISDAP is able for the following:

  • m165 alone
    • Experiment design
    • Calculation of ambiguity functions (GUP_init)
    • Experiment simulation and the analysis of simulated data
  • m165 + m165KST (This combination is the closest equivalent to m152)
    • All for which m165 alone is sufficient
    • KST experiment initialization (init_KST, known earlier as init_EISCAT)
    • KST data analysis
  • m165 + m165ESR (This combination is meant for ESR design and testing)
    • All for which m165 alone is sufficient,
    • ESR experiment design and initialization (possible with m165 alone!)
    • ESR test data analysis

The mex routines and graphics routines

For the time being, the most recent mex routine version is 1.52 (mex152) and the most recent graphics routine version is 1.52 (m152gr).

Compatibility with version 1.52

All version 1.52 analysis startup files, ascii source files, and binary files are compatible with version 1.60.

Other changes and additions

  • Model ionosphere based on the GIVEME model

    The supplied ionopheric model is now based on the GIVEME model run for summer 1996.

  • GUISPERT routine for ESR test data analysis

    The analysis of the ESR test data is requires the GUISPERT routine in the m165ESR directory. These experiments contain features not used in any EISCAT experiment, the most important of which is that there are two sets of identical calibration measurements for each signal measurement. A part of the data has also been scaled by a scalar factor in the DSP, something which the standard GUISDAP cannot handle.

  • Magic constant to scale electron density

    The system factor can be changed by specifying the variable
            Magic_constant
            
    at the analysis startup file. Values greater than unity will increase the electron density.

  • init_EISCAT renamed as init_KST

    The init_EISCAT routine of GUISDAP version 1.52 has been renamed to init_KST, because the routine deals only with the old EISCAT KST system.

  • Two dimensional ambiguity functions

    The lpg_w2-function calculates the two-dimensional range-lag and range-frequency ambiguity functions for a lag profile group.

    Function plot_w2 is available for plotting the functions.

  • The signal processing toolbox not needed any more

    All references to xcorr have been replaced by calls to autocorr, which is a simple autocorrelation function routine included in GUISDAP.

  • One line help messages added

    The first line of each function contains now a short description of the function. This line is shown by the Matlab help and lookfor commands.

Things which still remain missing

  • full profile analysis
  • other ions and O+ and NO+, especially H+ fits with VHF
  • precise radar equation for remote sites
  • pulse-to-pulse experiments like EISCAT CP-6

8 January 1999
Maildrop for comments and suggestions
pekka.hiitola@oulu.fi

 

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