There could be the utilization of remote sensing along with sensor technology for the real time monitoring of land slide. However, I have not come across a solely remote sensing technique for real time applications.
The usual practice researcher follow is to procure the satellite images for pre and post landslide scenario and then they tend to use change detection algorithms for efficient damage and risk assessment. Another approach could be the use of UAV drones which provide a high resolution data of the pre/post landslide. One of the emerging technology is the SAR Interferrometry for an automatic detection and monitoring of landslide affected regions. I am attaching some of the papers on SAR and Optical Remote Sensing based landslide monitoring.
Also, I have found one of the paper by HE Manchao on real time remote monitoring. That would be an interesting start for your question.
There could also be the possibility of monitoring using ground based RADAR Interferrometry that would actually behave as a real time Interferrometry in case of a permanent RADAR station in such regions. One of the paper by M Pieraccini is on monitoring using ground based RADAR. This could be a useful material for your study.
Apart from Remote Sensing techniques, the use of wireless technology provides the solution to this real time monitoring. That you could explore as there are many papers on this.
Radar monitoring of quarry walls to give short-term warning of slippages is an established technique in the mining industry, considered important for safety. See e.g. https://crca.asn.au/groundprobe-pty-ltd/. Not sure how well this would translate to your needs.