baa24fd01e
Bit-accurate Python model (fpga_model.py) mirrors full DDC RTL chain: NCO -> mixer -> CIC -> FIR with exact fixed-point arithmetic matching RTL DSP48E1 pipeline behavior including CREG=1 delay on CIC int_0. Synthetic radar scene generator (radar_scene.py) produces ADC test vectors for 5 scenarios: DC, single target (500m), multi-target (5), noise-only, and 1 MHz sine wave. DDC co-sim testbench (tb_ddc_cosim.v) feeds hex vectors through RTL DDC and exports baseband I/Q to CSV. All 5 scenarios compile and run with Icarus Verilog (iverilog -g2001 -DSIMULATION). Comparison framework (compare.py) validates Python vs RTL using statistical metrics (RMS ratio, DC offset, peak ratio) rather than exact sample match due to RTL LFSR phase dithering. Results: 5/5 PASS.
7.3 KiB
7.3 KiB
| 1 | sample | data_in | data_out |
|---|---|---|---|
| 2 | 5 | 3090 | 0 |
| 3 | 6 | 3681 | 0 |
| 4 | 7 | 4257 | 0 |
| 5 | 8 | 4817 | 2 |
| 6 | 9 | 5358 | 1 |
| 7 | 10 | 5877 | 3 |
| 8 | 11 | 6374 | 6 |
| 9 | 12 | 6845 | 0 |
| 10 | 13 | 7289 | 7 |
| 11 | 14 | 7705 | 11 |
| 12 | 15 | 8090 | -5 |
| 13 | 16 | 8443 | 15 |
| 14 | 17 | 8763 | 14 |
| 15 | 18 | 9048 | -17 |
| 16 | 19 | 9297 | 40 |
| 17 | 20 | 9510 | 4 |
| 18 | 21 | 9685 | -69 |
| 19 | 22 | 9822 | 486 |
| 20 | 23 | 9921 | 1667 |
| 21 | 24 | 9980 | 2806 |
| 22 | 25 | 10000 | 3839 |
| 23 | 26 | 9980 | 4947 |
| 24 | 27 | 9921 | 6006 |
| 25 | 28 | 9822 | 7018 |
| 26 | 29 | 9685 | 8038 |
| 27 | 30 | 9510 | 9008 |
| 28 | 31 | 9297 | 9939 |
| 29 | 32 | 9048 | 10844 |
| 30 | 33 | 8763 | 11697 |
| 31 | 34 | 8443 | 12505 |
| 32 | 35 | 8090 | 13267 |
| 33 | 36 | 7705 | 13974 |
| 34 | 37 | 7289 | 14626 |
| 35 | 38 | 6845 | 15221 |
| 36 | 39 | 6374 | 15756 |
| 37 | 40 | 5877 | 16229 |
| 38 | 41 | 5358 | 16637 |
| 39 | 42 | 4817 | 16981 |
| 40 | 43 | 4257 | 17257 |
| 41 | 44 | 3681 | 17465 |
| 42 | 45 | 3090 | 17605 |
| 43 | 46 | 2486 | 17675 |
| 44 | 47 | 1873 | 17675 |
| 45 | 48 | 1253 | 17605 |
| 46 | 49 | 627 | 17465 |
| 47 | 50 | 0 | 17257 |
| 48 | 51 | -627 | 16981 |
| 49 | 52 | -1253 | 16637 |
| 50 | 53 | -1873 | 16229 |
| 51 | 54 | -2486 | 15756 |
| 52 | 55 | -3090 | 15221 |
| 53 | 56 | -3681 | 14626 |
| 54 | 57 | -4257 | 13973 |
| 55 | 58 | -4817 | 13264 |
| 56 | 59 | -5358 | 12503 |
| 57 | 60 | -5877 | 11694 |
| 58 | 61 | -6374 | 10838 |
| 59 | 62 | -6845 | 9939 |
| 60 | 63 | -7289 | 9001 |
| 61 | 64 | -7705 | 8027 |
| 62 | 65 | -8090 | 7022 |
| 63 | 66 | -8443 | 5990 |
| 64 | 67 | -8763 | 4932 |
| 65 | 68 | -9048 | 3856 |
| 66 | 69 | -9297 | 2765 |
| 67 | 70 | -9510 | 1663 |
| 68 | 71 | -9685 | 554 |
| 69 | 72 | -9822 | -555 |
| 70 | 73 | -9921 | -1664 |
| 71 | 74 | -9980 | -2766 |
| 72 | 75 | -10000 | -3857 |
| 73 | 76 | -9980 | -4933 |
| 74 | 77 | -9921 | -5991 |
| 75 | 78 | -9822 | -7023 |
| 76 | 79 | -9685 | -8028 |
| 77 | 80 | -9510 | -9002 |
| 78 | 81 | -9297 | -9940 |
| 79 | 82 | -9048 | -10839 |
| 80 | 83 | -8763 | -11695 |
| 81 | 84 | -8443 | -12504 |
| 82 | 85 | -8090 | -13265 |
| 83 | 86 | -7705 | -13974 |
| 84 | 87 | -7289 | -14627 |
| 85 | 88 | -6845 | -15222 |
| 86 | 89 | -6374 | -15757 |
| 87 | 90 | -5877 | -16230 |
| 88 | 91 | -5358 | -16638 |
| 89 | 92 | -4817 | -16982 |
| 90 | 93 | -4257 | -17258 |
| 91 | 94 | -3681 | -17466 |
| 92 | 95 | -3090 | -17606 |
| 93 | 96 | -2486 | -17676 |
| 94 | 97 | -1873 | -17676 |
| 95 | 98 | -1253 | -17606 |
| 96 | 99 | -627 | -17466 |
| 97 | 100 | 0 | -17258 |
| 98 | 101 | 627 | -16982 |
| 99 | 102 | 1253 | -16638 |
| 100 | 103 | 1873 | -16230 |
| 101 | 104 | 2486 | -15757 |
| 102 | 105 | 3090 | -15222 |
| 103 | 106 | 3681 | -14627 |
| 104 | 107 | 4257 | -13974 |
| 105 | 108 | 4817 | -13265 |
| 106 | 109 | 5358 | -12504 |
| 107 | 110 | 5877 | -11695 |
| 108 | 111 | 6374 | -10839 |
| 109 | 112 | 6845 | -9940 |
| 110 | 113 | 7289 | -9002 |
| 111 | 114 | 7705 | -8028 |
| 112 | 115 | 8090 | -7023 |
| 113 | 116 | 8443 | -5991 |
| 114 | 117 | 8763 | -4933 |
| 115 | 118 | 9048 | -3857 |
| 116 | 119 | 9297 | -2766 |
| 117 | 120 | 9510 | -1664 |
| 118 | 121 | 9685 | -555 |
| 119 | 122 | 9822 | 554 |
| 120 | 123 | 9921 | 1663 |
| 121 | 124 | 9980 | 2765 |
| 122 | 125 | 10000 | 3856 |
| 123 | 126 | 9980 | 4932 |
| 124 | 127 | 9921 | 5990 |
| 125 | 128 | 9822 | 7022 |
| 126 | 129 | 9685 | 8027 |
| 127 | 130 | 9510 | 9001 |
| 128 | 131 | 9297 | 9939 |
| 129 | 132 | 9048 | 10838 |
| 130 | 133 | 8763 | 11694 |
| 131 | 134 | 8443 | 12503 |
| 132 | 135 | 8090 | 13264 |
| 133 | 136 | 7705 | 13973 |
| 134 | 137 | 7289 | 14626 |
| 135 | 138 | 6845 | 15221 |
| 136 | 139 | 6374 | 15756 |
| 137 | 140 | 5877 | 16229 |
| 138 | 141 | 5358 | 16637 |
| 139 | 142 | 4817 | 16981 |
| 140 | 143 | 4257 | 17257 |
| 141 | 144 | 3681 | 17465 |
| 142 | 145 | 3090 | 17605 |
| 143 | 146 | 2486 | 17675 |
| 144 | 147 | 1873 | 17675 |
| 145 | 148 | 1253 | 17605 |
| 146 | 149 | 627 | 17465 |
| 147 | 150 | 0 | 17257 |
| 148 | 151 | -627 | 16981 |
| 149 | 152 | -1253 | 16637 |
| 150 | 153 | -1873 | 16229 |
| 151 | 154 | -2486 | 15756 |
| 152 | 155 | -3090 | 15221 |
| 153 | 156 | -3681 | 14626 |
| 154 | 157 | -4257 | 13973 |
| 155 | 158 | -4817 | 13264 |
| 156 | 159 | -5358 | 12503 |
| 157 | 160 | -5877 | 11694 |
| 158 | 161 | -6374 | 10838 |
| 159 | 162 | -6845 | 9939 |
| 160 | 163 | -7289 | 9001 |
| 161 | 164 | -7705 | 8027 |
| 162 | 165 | -8090 | 7022 |
| 163 | 166 | -8443 | 5990 |
| 164 | 167 | -8763 | 4932 |
| 165 | 168 | -9048 | 3856 |
| 166 | 169 | -9297 | 2765 |
| 167 | 170 | -9510 | 1663 |
| 168 | 171 | -9685 | 554 |
| 169 | 172 | -9822 | -555 |
| 170 | 173 | -9921 | -1664 |
| 171 | 174 | -9980 | -2766 |
| 172 | 175 | -9999 | -3857 |
| 173 | 176 | -9980 | -4933 |
| 174 | 177 | -9921 | -5991 |
| 175 | 178 | -9822 | -7023 |
| 176 | 179 | -9685 | -8028 |
| 177 | 180 | -9510 | -9002 |
| 178 | 181 | -9297 | -9940 |
| 179 | 182 | -9048 | -10839 |
| 180 | 183 | -8763 | -11695 |
| 181 | 184 | -8443 | -12504 |
| 182 | 185 | -8090 | -13265 |
| 183 | 186 | -7705 | -13974 |
| 184 | 187 | -7289 | -14627 |
| 185 | 188 | -6845 | -15222 |
| 186 | 189 | -6374 | -15757 |
| 187 | 190 | -5877 | -16230 |
| 188 | 191 | -5358 | -16638 |
| 189 | 192 | -4817 | -16982 |
| 190 | 193 | -4257 | -17258 |
| 191 | 194 | -3681 | -17467 |
| 192 | 195 | -3090 | -17607 |
| 193 | 196 | -2486 | -17675 |
| 194 | 197 | -1873 | -17675 |
| 195 | 198 | -1253 | -17607 |
| 196 | 199 | -627 | -17467 |
| 197 | 200 | 0 | -17258 |
| 198 | 201 | 627 | -16982 |
| 199 | 202 | 1253 | -16638 |
| 200 | 203 | 1873 | -16230 |
| 201 | 204 | 2486 | -15757 |
| 202 | 205 | 3090 | -15222 |
| 203 | 206 | 3681 | -14627 |
| 204 | 207 | 4257 | -13974 |
| 205 | 208 | 4817 | -13265 |
| 206 | 209 | 5358 | -12504 |
| 207 | 210 | 5877 | -11695 |
| 208 | 211 | 6374 | -10839 |
| 209 | 212 | 6845 | -9940 |
| 210 | 213 | 7289 | -9002 |
| 211 | 214 | 7705 | -8028 |
| 212 | 215 | 8090 | -7023 |
| 213 | 216 | 8443 | -5991 |
| 214 | 217 | 8763 | -4933 |
| 215 | 218 | 9048 | -3857 |
| 216 | 219 | 9297 | -2766 |
| 217 | 220 | 9510 | -1664 |
| 218 | 221 | 9685 | -555 |
| 219 | 222 | 9822 | 554 |
| 220 | 223 | 9921 | 1663 |
| 221 | 224 | 9980 | 2765 |
| 222 | 225 | 9999 | 3856 |
| 223 | 226 | 9980 | 4932 |
| 224 | 227 | 9921 | 5990 |
| 225 | 228 | 9822 | 7022 |
| 226 | 229 | 9685 | 8027 |
| 227 | 230 | 9510 | 9001 |
| 228 | 231 | 9297 | 9939 |
| 229 | 232 | 9048 | 10838 |
| 230 | 233 | 8763 | 11694 |
| 231 | 234 | 8443 | 12503 |
| 232 | 235 | 8090 | 13264 |
| 233 | 236 | 7705 | 13973 |
| 234 | 237 | 7289 | 14626 |
| 235 | 238 | 6845 | 15221 |
| 236 | 239 | 6374 | 15756 |
| 237 | 240 | 5877 | 16229 |
| 238 | 241 | 5358 | 16637 |
| 239 | 242 | 4817 | 16981 |
| 240 | 243 | 4257 | 17257 |
| 241 | 244 | 3681 | 17466 |
| 242 | 245 | 3090 | 17606 |
| 243 | 246 | 2486 | 17674 |
| 244 | 247 | 1873 | 17674 |
| 245 | 248 | 1253 | 17606 |
| 246 | 249 | 627 | 17466 |
| 247 | 250 | 0 | 17257 |
| 248 | 251 | -627 | 16981 |
| 249 | 252 | -1253 | 16637 |
| 250 | 253 | -1873 | 16229 |
| 251 | 254 | -2486 | 15756 |
| 252 | 255 | -3090 | 15221 |
| 253 | 256 | -3681 | 14626 |
| 254 | 257 | -4257 | 13973 |
| 255 | 258 | -4817 | 13264 |
| 256 | 259 | -5358 | 12503 |
| 257 | 260 | -5877 | 11694 |
| 258 | 261 | -6374 | 10838 |
| 259 | 262 | -6845 | 9939 |
| 260 | 263 | -7289 | 9001 |
| 261 | 264 | -7705 | 8027 |
| 262 | 265 | -8090 | 7022 |
| 263 | 266 | -8443 | 5990 |
| 264 | 267 | -8763 | 4932 |
| 265 | 268 | -9048 | 3856 |
| 266 | 269 | -9297 | 2765 |
| 267 | 270 | -9510 | 1663 |
| 268 | 271 | -9685 | 554 |
| 269 | 272 | -9822 | -555 |
| 270 | 273 | -9921 | -1664 |
| 271 | 274 | -9980 | -2766 |
| 272 | 275 | -9999 | -3857 |
| 273 | 276 | -9980 | -4933 |
| 274 | 277 | -9921 | -5991 |
| 275 | 278 | -9822 | -7023 |
| 276 | 279 | -9685 | -8028 |
| 277 | 280 | -9510 | -9002 |
| 278 | 281 | -9297 | -9940 |
| 279 | 282 | -9048 | -10839 |
| 280 | 283 | -8763 | -11695 |
| 281 | 284 | -8443 | -12504 |
| 282 | 285 | -8090 | -13265 |
| 283 | 286 | -7705 | -13974 |
| 284 | 287 | -7289 | -14627 |
| 285 | 288 | -6845 | -15222 |
| 286 | 289 | -6374 | -15757 |
| 287 | 290 | -5877 | -16230 |
| 288 | 291 | -5358 | -16638 |
| 289 | 292 | -4817 | -16982 |
| 290 | 293 | -4257 | -17258 |
| 291 | 294 | -3681 | -17467 |
| 292 | 295 | -3090 | -17607 |
| 293 | 296 | -2486 | -17675 |
| 294 | 297 | -1873 | -17675 |
| 295 | 298 | -1253 | -17607 |
| 296 | 299 | -627 | -17467 |
| 297 | 300 | 0 | -17258 |
| 298 | 301 | 627 | -16982 |
| 299 | 302 | 1253 | -16638 |
| 300 | 303 | 1873 | -16230 |
| 301 | 304 | 2486 | -15757 |
| 302 | 305 | 3090 | -15222 |
| 303 | 306 | 3681 | -14627 |
| 304 | 307 | 4257 | -13974 |
| 305 | 308 | 4817 | -13265 |
| 306 | 309 | 5358 | -12504 |
| 307 | 310 | 5877 | -11695 |
| 308 | 311 | 6374 | -10839 |
| 309 | 312 | 6845 | -9940 |
| 310 | 313 | 7289 | -9002 |
| 311 | 314 | 7705 | -8028 |
| 312 | 315 | 8090 | -7023 |
| 313 | 316 | 8443 | -5991 |
| 314 | 317 | 8763 | -4933 |
| 315 | 318 | 9048 | -3857 |
| 316 | 319 | 9297 | -2766 |
| 317 | 320 | 9510 | -1664 |
| 318 | 321 | 9685 | -555 |
| 319 | 322 | 9822 | 554 |
| 320 | 323 | 9921 | 1663 |
| 321 | 324 | 9980 | 2765 |
| 322 | 325 | 9999 | 3856 |
| 323 | 326 | 9980 | 4932 |
| 324 | 327 | 9921 | 5990 |
| 325 | 328 | 9822 | 7022 |
| 326 | 329 | 9685 | 8027 |
| 327 | 330 | 9510 | 9001 |
| 328 | 331 | 9297 | 9939 |
| 329 | 332 | 9048 | 10838 |
| 330 | 333 | 8763 | 11694 |
| 331 | 334 | 8443 | 12503 |
| 332 | 335 | 8090 | 13264 |
| 333 | 336 | 7705 | 13973 |
| 334 | 337 | 7289 | 14626 |
| 335 | 338 | 6845 | 15221 |
| 336 | 339 | 6374 | 15756 |
| 337 | 340 | 5877 | 16229 |
| 338 | 341 | 5358 | 16637 |
| 339 | 342 | 4817 | 16981 |
| 340 | 343 | 4257 | 17257 |
| 341 | 344 | 3681 | 17466 |
| 342 | 345 | 3090 | 17606 |
| 343 | 346 | 2486 | 17674 |
| 344 | 347 | 1873 | 17674 |
| 345 | 348 | 1253 | 17606 |
| 346 | 349 | 627 | 17466 |
| 347 | 350 | 0 | 17257 |
| 348 | 351 | -627 | 16981 |
| 349 | 352 | -1253 | 16637 |
| 350 | 353 | -1873 | 16229 |
| 351 | 354 | -2486 | 15756 |
| 352 | 355 | -3090 | 15221 |
| 353 | 356 | -3681 | 14626 |
| 354 | 357 | -4257 | 13973 |
| 355 | 358 | -4817 | 13264 |
| 356 | 359 | -5358 | 12503 |
| 357 | 360 | -5877 | 11694 |
| 358 | 361 | -6374 | 10838 |
| 359 | 362 | -6845 | 9939 |
| 360 | 363 | -7289 | 9001 |
| 361 | 364 | -7705 | 8027 |
| 362 | 365 | -8090 | 7022 |
| 363 | 366 | -8443 | 5990 |
| 364 | 367 | -8763 | 4932 |
| 365 | 368 | -9048 | 3856 |
| 366 | 369 | -9297 | 2765 |
| 367 | 370 | -9510 | 1663 |
| 368 | 371 | -9685 | 554 |
| 369 | 372 | -9822 | -555 |
| 370 | 373 | -9921 | -1664 |
| 371 | 374 | -9980 | -2766 |
| 372 | 375 | -9999 | -3857 |
| 373 | 376 | -9980 | -4933 |
| 374 | 377 | -9921 | -5991 |
| 375 | 378 | -9822 | -7023 |
| 376 | 379 | -9685 | -8028 |
| 377 | 380 | -9510 | -9002 |
| 378 | 381 | -9297 | -9940 |
| 379 | 382 | -9048 | -10839 |
| 380 | 383 | -8763 | -11695 |
| 381 | 384 | -8443 | -12504 |
| 382 | 385 | -8090 | -13265 |
| 383 | 386 | -7705 | -13974 |
| 384 | 387 | -7289 | -14627 |
| 385 | 388 | -6845 | -15222 |
| 386 | 389 | -6374 | -15757 |
| 387 | 390 | -5877 | -16230 |
| 388 | 391 | -5358 | -16638 |
| 389 | 392 | -4817 | -16982 |
| 390 | 393 | -4257 | -17258 |
| 391 | 394 | -3681 | -17467 |
| 392 | 395 | -3090 | -17607 |
| 393 | 396 | -2486 | -17675 |
| 394 | 397 | -1873 | -17675 |
| 395 | 398 | -1253 | -17607 |
| 396 | 399 | -627 | -17467 |
| 397 | 400 | 0 | -17258 |
| 398 | 401 | 627 | -16982 |
| 399 | 402 | 1253 | -16638 |
| 400 | 403 | 1873 | -16230 |
| 401 | 404 | 2486 | -15757 |
| 402 | 405 | 3090 | -15222 |
| 403 | 406 | 3681 | -14627 |
| 404 | 407 | 4257 | -13974 |
| 405 | 408 | 4817 | -13265 |
| 406 | 409 | 5358 | -12504 |
| 407 | 410 | 5877 | -11695 |
| 408 | 411 | 6374 | -10839 |
| 409 | 412 | 6845 | -9940 |
| 410 | 413 | 7289 | -9002 |
| 411 | 414 | 7705 | -8028 |
| 412 | 415 | 8090 | -7023 |
| 413 | 416 | 8443 | -5991 |
| 414 | 417 | 8763 | -4933 |
| 415 | 418 | 9048 | -3857 |
| 416 | 419 | 9297 | -2766 |
| 417 | 420 | 9510 | -1664 |
| 418 | 421 | 9685 | -555 |
| 419 | 422 | 9822 | 554 |
| 420 | 423 | 9921 | 1663 |
| 421 | 424 | 9980 | 2765 |
| 422 | 425 | 9999 | 3856 |
| 423 | 426 | 9980 | 4932 |
| 424 | 427 | 9921 | 5990 |
| 425 | 428 | 9822 | 7022 |
| 426 | 429 | 9685 | 8027 |
| 427 | 430 | 9510 | 9001 |
| 428 | 431 | 9297 | 9939 |
| 429 | 432 | 9048 | 10838 |
| 430 | 433 | 8763 | 11694 |
| 431 | 434 | 8443 | 12503 |
| 432 | 435 | 8090 | 13264 |
| 433 | 436 | 7705 | 13973 |
| 434 | 437 | 7289 | 14626 |
| 435 | 438 | 6845 | 15221 |
| 436 | 439 | 6374 | 15756 |
| 437 | 440 | 5877 | 16229 |
| 438 | 441 | 5358 | 16637 |
| 439 | 442 | 4817 | 16981 |
| 440 | 443 | 4257 | 17257 |
| 441 | 444 | 3681 | 17466 |
| 442 | 445 | 3090 | 17606 |
| 443 | 446 | 2486 | 17674 |
| 444 | 447 | 1873 | 17674 |
| 445 | 448 | 1253 | 17606 |
| 446 | 449 | 627 | 17466 |
| 447 | 450 | 0 | 17257 |
| 448 | 451 | -627 | 16981 |
| 449 | 452 | -1253 | 16637 |
| 450 | 453 | -1873 | 16229 |
| 451 | 454 | -2486 | 15756 |
| 452 | 455 | -3090 | 15221 |
| 453 | 456 | -3681 | 14626 |
| 454 | 457 | -4257 | 13973 |
| 455 | 458 | -4817 | 13264 |
| 456 | 459 | -5358 | 12503 |
| 457 | 460 | -5877 | 11694 |
| 458 | 461 | -6374 | 10838 |
| 459 | 462 | -6845 | 9939 |
| 460 | 463 | -7289 | 9001 |
| 461 | 464 | -7705 | 8027 |
| 462 | 465 | -8090 | 7022 |
| 463 | 466 | -8443 | 5990 |
| 464 | 467 | -8763 | 4932 |
| 465 | 468 | -9048 | 3856 |
| 466 | 469 | -9297 | 2765 |
| 467 | 470 | -9510 | 1663 |
| 468 | 471 | -9685 | 554 |
| 469 | 472 | -9822 | -555 |
| 470 | 473 | -9921 | -1664 |
| 471 | 474 | -9980 | -2766 |
| 472 | 475 | -9999 | -3857 |
| 473 | 476 | -9980 | -4933 |
| 474 | 477 | -9921 | -5991 |
| 475 | 478 | -9822 | -7023 |
| 476 | 479 | -9685 | -8028 |
| 477 | 480 | -9510 | -9002 |
| 478 | 481 | -9297 | -9940 |
| 479 | 482 | -9048 | -10839 |
| 480 | 483 | -8763 | -11695 |
| 481 | 484 | -8443 | -12504 |
| 482 | 485 | -8090 | -13265 |
| 483 | 486 | -7705 | -13974 |
| 484 | 487 | -7289 | -14627 |
| 485 | 488 | -6845 | -15222 |
| 486 | 489 | -6374 | -15757 |
| 487 | 490 | -5877 | -16230 |
| 488 | 491 | -5358 | -16638 |
| 489 | 492 | -4817 | -16982 |
| 490 | 493 | -4257 | -17258 |
| 491 | 494 | -3681 | -17467 |
| 492 | 495 | -3090 | -17607 |
| 493 | 496 | -2486 | -17675 |
| 494 | 497 | -1873 | -17675 |
| 495 | 498 | -1253 | -17607 |
| 496 | 499 | -627 | -17467 |