https://www.youtube.com/watch?v=2RXSVBzEs14 RCWL-0516 RCWL 0516 Microwave Radar Sensor, human. On aliexpress for $1. Range about 5m, which compares well with pet safe passives. Avoid radar signature interference when installing multiple units. See OutdoorBox#Place_Mini-itx_inside_metal_box
Radar Sensor Module Wireless HB100 Microwave Doppler Radar Detector Probe Wireless Sensor Module 10.525GHz from Aliexpress.com shop ModuleFans $2.65. attach to satellite dish 10m range
https://www.youtube.com/watch?v=9WiJJgIi3W0 radar burglar detection review of five different modules.
https://github.com/jdesbonnet/RCWL-0516 Information about RCWL-0516 microwave proximity switch module (ICStation.com SKU 10630
Surveillance radar Edit
- https://en.wikipedia.org/wiki/Compact_surveillance_radar hack these Patents held by five companies.
- https://spotterrf.com/ https://www.google.com/patents/US20150204969 A method for determining location information for a target may include generating a cyclic transmit signal having a fixed frequency slope over a substantial portion of each cycle and an operational frequency that is selected to penetrate foliage, transmitting the cyclic transmit signal without up-conversion with at least one transmit antenna, down-converting two or more return signals received from corresponding return antennas with the cyclic transmit signal to provide a corresponding set of baseband signals, extracting magnitude and phase information for each return signal as a function of range from the plurality of baseband signals, and determining a location of a target from the magnitude and phase information. A corresponding apparatus, system, and computer readable medium are also disclosed herein.