Maybe this page will help you further: http://facility.unavco.org/project_support/engineer-equip/permanentGNSS.html

Some years ago I wrote an article about some site issues for CORS (IGS) installations, see Physics and Chemistry of the Earth Part A Solid Earth and Geodesy 01/2001; 26:539-544. DOI:10.1016/S1464-1895(01)00097-7, the article title is: IGS stations: station and regional issues, that will give you some pointers. You seem to be more interested in CORS installations which should serve a region for some particular reason, maybe differential corrections etc.

I think this site will give you a start on what you need: http://www.ngs.noaa.gov/CORS/Establish_Operate_CORS.shtml

Although it is US-centric, it does give a good set of guidance and I note, from the map, they list a worldwide set of stations.

Key Requirements

Receiver/Antenna is at least dual frequency (L1 and L2)

Receiver tracks at least ten satellites above 0 degrees

Receiver provides L1 C/A-code pseudorange or P-code pseudorange

Receiver provides L1 and L2 full wavelength carrier phase

Receiver and Antenna models must use international codes

Antenna and monument must be coupled by an orienting/leveling device

Antenna oriented to TRUE north (Calculate Magnetic Declination)

Antenna has NGS phase center variability model available (http://www.ngs.noaa.gov/ANTCAL)

Equipment metadata including photographs and station log must be provided

Photos (Description) (Sample)

Logs (Blank Log) (Log Instructions) (Log Checker)

Data are freely available for distribution

Data are recorded on a 30-second or shorter interval

Provider has on-site Internet access

Provider maintains all equipment

Provider agrees to adopt positional coordinates sanctioned by NGS

European guidelines http://www.epncb.oma.be/_documentation/guidelines/guidelines_station_operationalcentre.pdf . Maybe it will help. But it is the same in every international reference frames, as I think.

I equally hope that this site will be of help:

http://www.ngs.noaa.gov/PUBS_LIB/CORS_guidelines.pdf

Critical shortlist from practice

a. Clear view of the sky ie with no obstructions at 5 degree above horizon

b. No multipath sources

c. No RF antennae sources within 100 metres

d. Firm clean stable electrical source on site

e. Availability of high-speed data telecommunications connection with appropriate bandwidth (mitigation of latency issues)

f. Climate and weather protection appropriate to the operating geography (eg mitigation of flying hazards in hurricane areas)

g. Constructed with quality materials for stability and longevity (eg stainless steel near coastal areas, firm concrete foundations is poor soil areas)

h. Security

I. Accommodation for wall mounted enclosure box or else floor standing cabinet

j. Ease of access

I think that Silburn listed all the relevant requirements of any network of GNSS stations.

Ganesh Dhakal,

There are many national and international guidelines by government or private companies. You can search for IGS guidelines or any countries' guideline, personally, I recommend Australian guideline from the ICSM. The following link is the mentioned guideline report:

https://www.icsm.gov.au/sites/default/files/2018-02/Guideline-for-Continuously-Operating-Reference-Stations_v2.1.pdf

Hope this will be useful