{"id":638,"date":"2026-06-11T13:41:01","date_gmt":"2026-06-11T05:41:01","guid":{"rendered":"https:\/\/projectleon.net\/make\/blog\/fmcw-radar-rtl-sdr-motion-detection-50m-farsi\/"},"modified":"2026-06-11T13:41:03","modified_gmt":"2026-06-11T05:41:03","slug":"fmcw-radar-rtl-sdr-motion-detection-50m-farsi","status":"publish","type":"post","link":"https:\/\/projectleon.net\/make\/blog\/fmcw-radar-rtl-sdr-motion-detection-50m-farsi\/","title":{"rendered":"\u0633\u0627\u062e\u062a \u0631\u0627\u062f\u0627\u0631 \u0645\u06cc\u062f\u0627\u0646\u06cc \u0628\u0627 FMCW \u0648 RTL-SDR: \u062a\u0634\u062e\u06cc\u0635 \u062d\u0631\u06a9\u062a \u062a\u0627 \u06f5\u06f0 \u0645\u062a\u0631 (\u0641\u0627\u0631\u0633\u06cc)"},"content":{"rendered":"
\n\u0631\u0627\u062f\u0627\u0631 FMCW RTL-SDR \u062a\u0634\u062e\u06cc\u0635 \u062d\u0631\u06a9\u062a BGT24\n<\/div>\n
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\u0631\u0627\u062f\u0627\u0631 FMCW \u0686\u06cc\u0633\u062a\u061f (\u0645\u0628\u062a\u062f\u06cc)<\/h2>\n

\u0631\u0627\u062f\u0627\u0631 FMCW<\/strong> (Frequency Modulated Continuous Wave) \u06cc\u06a9 \u0646\u0648\u0639 \u0631\u0627\u062f\u0627\u0631 \u0627\u0633\u062a \u06a9\u0647 \u0641\u0631\u06a9\u0627\u0646\u0633 \u0631\u0627 \u0628\u0647 \u0622\u0631\u0627\u0645\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc\u200c\u062f\u0647\u062f. \u0628\u0627\u0632\u062a\u0627\u0628 \u0627\u0632 \u062c\u0633\u0645 \u0645\u062a\u062d\u0631\u06a9 \u06cc\u06a9 \u0627\u062e\u062a\u0644\u0627\u0641 \u0641\u0631\u06a9\u0627\u0646\u0633 (Beat Frequency<\/strong>) \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u0628\u0627 \u0641\u0627\u0635\u0644\u0647 \u0648 \u0633\u0631\u0639\u062a \u0646\u0633\u0628\u062a \u062f\u0627\u0631\u062f. \u0628\u0631\u062e\u0644\u0627\u0641 \u0631\u0627\u062f\u0627\u0631\u0647\u0627\u06cc \u067e\u0627\u0644\u0633\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647\u060c FMCW \u0628\u0627 \u062a\u0648\u0627\u0646 \u06a9\u0645 (\u0645\u06cc\u0644\u06cc\u200c\u0648\u0627\u062a) \u06a9\u0627\u0631 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n

\u0645\u0627\u0698\u0648\u0644 BGT24MTR11<\/strong> \u0627\u0632 Infineon \u06cc\u06a9 \u0631\u0627\u062f\u0627\u0631 FMCW 24GHz \u0627\u0633\u062a \u06a9\u0647 \u062e\u0631\u0648\u062c\u06cc IF \u0622\u0646 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0647 RTL-SDR \u0648\u0635\u0644 \u0634\u0648\u062f. \u0628\u0627 GNU Radio \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 Range-Doppler Processing \u0631\u0627 \u067e\u06cc\u0627\u062f\u0647 \u06a9\u0631\u062f \u0648 \u062d\u0631\u06a9\u062a \u0627\u062c\u0633\u0627\u0645 \u062a\u0627 \u06f5\u06f0 \u0645\u062a\u0631 \u0631\u0627 \u062a\u0634\u062e\u06cc\u0635 \u062f\u0627\u062f \u2014 \u0645\u0641\u06cc\u062f \u0628\u0631\u0627\u06cc \u0633\u06cc\u0633\u062a\u0645 \u0647\u0634\u062f\u0627\u0631 UGV \u06cc\u0627 \u0627\u0645\u0646\u06cc\u062a \u0645\u062d\u06cc\u0637\u06cc.<\/p>\n<\/div>\n

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\u0645\u062d\u0635\u0648\u0644\u06cc \u06a9\u0647 \u0645\u06cc\u200c\u0633\u0627\u0632\u06cc\u062f<\/h2>\n

\u06cc\u06a9 \u0633\u06cc\u0633\u062a\u0645 \u0631\u0627\u062f\u0627\u0631 FMCW \u0628\u0631\u0627\u06cc \u062a\u0634\u062e\u06cc\u0635 \u062d\u0631\u06a9\u062a \u0648 \u0641\u0627\u0635\u0644\u0647 \u062f\u0631 \u0645\u062d\u06cc\u0637 \u0627\u0637\u0631\u0627\u0641 UGV.<\/p>\n

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  • \u0647\u0632\u06cc\u0646\u0647:<\/strong> BGT24MTR11 \u2248 \u06f3\u06f0 \u062f\u0644\u0627\u0631 + RTL-SDR<\/li>\n
  • \u0628\u0631\u062f:<\/strong> \u062a\u0627 \u06f5\u06f0 \u0645\u062a\u0631 (\u062d\u0631\u06a9\u062a \u0627\u0646\u0633\u0627\u0646)<\/li>\n
  • \u0628\u0627\u0646\u062f:<\/strong> 24GHz FMCW<\/li>\n<\/ul>\n<\/div>\n

    \n\nRange-Doppler Map \u2014 FMCW 24GHz<\/text>\n\n\n\nRange (0-50m)<\/text>\n\n\nVel<\/text>\n\n\nH1<\/text>\n10m<\/text>\n\n\n30m<\/text>\n<\/svg><\/p>\n

    \u0646\u0635\u0628 \u0648 \u0627\u062a\u0635\u0627\u0644 BGT24MTR11 \u0628\u0647 RTL-SDR<\/h2>\n
    \n\/\/ BGT24MTR11 Board:\n\/\/ TX Antenna: \u06f2\u06f4GHz chirp (Ramp \u0627\u0632 \u06f2\u06f4.\u06f0 \u062a\u0627 \u06f2\u06f4.\u06f2\u06f5 GHz)\n\/\/ RX Antenna: \u062f\u0631\u06cc\u0627\u0641\u062a \u0628\u0627\u0632\u062a\u0627\u0628\n\/\/ IF Output: \u0627\u062e\u062a\u0644\u0627\u0641 TX-RX (Beat Signal) \u062f\u0631 \u06f0-\u06f5\u06f0kHz\n\n\/\/ \u0627\u062a\u0635\u0627\u0644 IF \u0628\u0647 RTL-SDR:\n\/\/ IF+ \u2192 RTL-SDR SMA Input (\u0627\u0632 \u0637\u0631\u06cc\u0642 \u062a\u0642\u0648\u06cc\u062a\u200c\u06a9\u0646\u0646\u062f\u0647 LNA \u0627\u06af\u0631 \u062f\u0627\u0631\u06cc\u062f)\n\/\/ GND \u2192 RTL-SDR GND\n\/\/ \u062a\u0646\u0638\u06cc\u0645 \u062f\u0631 SDR++:\n\/\/   Center Freq: 50kHz (Beat Signal)\n\/\/   Sample Rate: 250kHz\n\/\/   Gain: Max\n\n\/\/ \u0646\u06a9\u062a\u0647 \u0645\u0647\u0645: BGT24 \u06a9\u0627\u0631 \u06f5V \u062f\u0627\u0631\u062f\n\/\/ IF Output \u062d\u062f\u0648\u062f \u06f1\u06f0mV \u2014 \u0628\u0647 LNA \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u06cc\u062f\n<\/code><\/pre>\n
    \u067e\u0631\u062f\u0627\u0632\u0634 GNU Radio FMCW<\/h2>\n
    \nimport numpy as np\nimport matplotlib.pyplot as plt\nfrom matplotlib.animation import FuncAnimation\n\n# \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc chirp:\nBW   = 250e6   # \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u06f2\u06f5\u06f0MHz\nT    = 1e-3    # \u0645\u062f\u062a chirp \u06f1ms\nfs   = 250e3   # \u0646\u0631\u062e \u0646\u0645\u0648\u0646\u0647 (RTL-SDR)\nc    = 3e8     # \u0633\u0631\u0639\u062a \u0646\u0648\u0631\n\n# \u0631\u0627\u0628\u0637\u0647 Beat Frequency \u0628\u0647 Range:\n# Range = f_beat * c * T \/ (2 * BW)\ndef beat_to_range(f_beat):\n    return f_beat * c * T \/ (2 * BW)\n\ndef process_frame(samples):\n    N = len(samples)\n    spec = np.abs(np.fft.fft(samples * np.hanning(N)))[:N\/\/2]\n    freqs = np.fft.fftfreq(N, 1\/fs)[:N\/\/2]\n    ranges = beat_to_range(freqs)\n    return ranges, spec\n\n# \u0628\u0631\u0627\u06cc RTL-SDR \u0628\u0627 rtlsdr-python:\n# from rtlsdr import RtlSdr\n# sdr = RtlSdr()\n# sdr.sample_rate = 250000\n# sdr.center_freq = 0   # Baseband IF\n# samples = sdr.read_samples(256*1024)\n# ranges, spec = process_frame(samples)\n<\/code><\/pre>\n
    \u0686\u06a9\u200c\u0644\u06cc\u0633\u062a \u062a\u0633\u062a \u0631\u0627\u062f\u0627\u0631<\/h2>\n\n\n\n\n\n\n\n\n
    \u0628\u0631\u0631\u0633\u06cc<\/th>\n\u0646\u062a\u06cc\u062c\u0647<\/th>\n<\/tr>\n<\/thead>\n
    Beat Signal \u062f\u0631 SDR++ \u062f\u06cc\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f\u061f<\/td>\npeak \u062f\u0631 \u06f0-\u06f5\u06f0kHz<\/td>\n<\/tr>\n
    \u0628\u0627 \u062d\u0631\u06a9\u062a \u062f\u0633\u062a peak \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc\u200c\u06a9\u0646\u062f\u061f<\/td>\n\u2610<\/td>\n<\/tr>\n
    Range \u0645\u062d\u0627\u0633\u0628\u0647 \u0634\u062f\u0647 \u0628\u0627 \u062e\u0637\u200c\u06a9\u0634 \u0645\u0637\u0627\u0628\u0642\u061f<\/td>\n\u00b1\u06f1 \u0645\u062a\u0631<\/td>\n<\/tr>\n
    \u0686\u0646\u062f \u0647\u062f\u0641 \u0647\u0645\u0632\u0645\u0627\u0646 \u062a\u0634\u062e\u06cc\u0635 \u062f\u0627\u062f\u0647 \u0634\u062f\u061f<\/td>\n\u2610<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n\n\n\n\n\n\n\nBGT24MTR11<\/text>\n24GHz FMCW<\/text>\nIF Beat Signal<\/text>\n\u06f0-\u06f5\u06f0kHz<\/text>\nRTL-SDR<\/text>\n250kHz \u0646\u0645\u0648\u0646\u0647<\/text>\nGNU Radio<\/text>\nRange Map<\/text>\nFMCW Radar \u2014 BGT24 \u2192 RTL-SDR \u2192 GNU Radio \u2192 \u0646\u0642\u0634\u0647 Range<\/text>\n<\/svg><\/p>\n
    \u0648\u06cc\u062f\u0626\u0648\u0647\u0627\u06cc \u0622\u0645\u0648\u0632\u0634\u06cc<\/h2>\n
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