codeforge Posted December 30, 2017 Share Posted December 30, 2017 Hi, i need to simulate gps signal within a room of 80meters. What hardware do you suggest? Thanks Quote Link to comment Share on other sites More sharing options...
Ranish Posted December 31, 2017 Share Posted December 31, 2017 (edited) This Github works with both of the ones u mention https://github.com/osqzss/gps-sdr-sim Havn’t tried them but should work in theory. Remember simulating GPS is probably illegal in most countries. And should only be done in RF shielded labs. Edited December 31, 2017 by Ranish Disclaimer Quote Link to comment Share on other sites More sharing options...
codeforge Posted January 1, 2018 Author Share Posted January 1, 2018 Hi, I already see that site but with it i can get signal with max 50cm range. I need to simulate gps in a large room. We know law and in a shielded room there isn't problem. Quote Link to comment Share on other sites More sharing options...
Ranish Posted January 1, 2018 Share Posted January 1, 2018 Can say for sure because I don’t have access to a room the size you mention and can’t find where you found the range of it but I recon that a hack rf in the middle of the 80meter room (if shielded so no interference) would do the trick Quote Link to comment Share on other sites More sharing options...
ZodiacTiger Posted January 6, 2018 Share Posted January 6, 2018 The HackRF doesn't have an onboard clock that is accurate enough to simulate/spoof GPS signals. However, this can be done by buying a cheap external clock that plugs into the HackRF board inputs. Ebay has tons of Chinese sellers who advertise these for very cheap(around $15). You could buy an Ettus USRP B200 or B210 for around $1,216, A bladeRF x40 for $420, or a LimeSDR for $299. LimeSDR is full-duplex, MIMO, and superior to BladeRF. The LimeSDR even matches much of the USRP's B210 specs. The only (temporary) drawback to the LimeSDR is that it doesn't have the same level of software support as the USRP. However, LimeSDR is completely open source and software development is moving very fast. Comparisons HackRF One Ettus B200 Ettus B210 BladeRF x40 RTL-SDR LimeSDR Frequency Range 1MHz-6GHz 70MHz-6GHz 70MHz-6GHz 300MHz-3.8GHz 22MHz-2.2GHz 100kHz-3.8GHz RF Bandwidth 20MHz 61.44MHz 61.44MHz 40MHz 3.2MHz 61.44MHz Sample Depth 8 bits 12 bits 12 bits 12 bits 8 bits 12 bits Sample Rate 20MSPS 61.44MSPS 61.44MSPS 40MSPS 3.2MSPS 61.44MSPS (Limited by USB 3.0 data rate) Transmitter Channels 1 1 2 1 0 2 Receivers 1 1 2 1 1 2 Duplex Half Full Full Full N/A Full Interface USB 2.0 USB 3.0 USB 3.0 USB 3.0 USB 2.0 USB 3.0 Programmable Logic Gates 64 macrocell CPLD 75k 100k 40k (115k avail) N/A 40k Chipset MAX5864, MAX2837, RFFC5072 AD9364 AD9361 LMS6002M RTL2832U LMS7002M Open Source Full Schematic, Firmware Schematic, Firmware Schematic, Firmware No Full Oscillator Precision +/-20ppm +/-2ppm +/-2ppm +/-1ppm ? +/-1ppm initial, +/-4ppm stable Transmit Power -10dBm+ (15dBm @ 2.4GHz) 10dBm+ 10dBm+ 6dBm N/A 0 to 10dBm (depending on frequency) Price $299 $686 $1,119 $420 ($650) ~$10 $299 ($289 pre-order) Quote Link to comment Share on other sites More sharing options...
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