[参考译文] AWR1843BOOST：SRR 实验室如何进入 USRR 范围和多普勒

/*
 *   @file  srr_config_consts.h
 *
 *   @brief
 *      This file holds constants related to the USRR20 chirp configuration. 
 *
 *  \par
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/*! @brief Ultra short range chirp profile - 20 m range, 4.3cm resolution. better angular resolution,  approximately 18kmph max - vel. */
#define PROFILE_USRR_PROFILE_ID              (1U)
#define PROFILE_USRR_HPFCORNER_FREQ1_VAL     RL_RX_HPF1_175_KHz
#define PROFILE_USRR_HPFCORNER_FREQ2_VAL     RL_RX_HPF2_350_KHz
#define PROFILE_USRR_RX_GAIN_VAL             (30U)
#define PROFILE_USRR_DIGOUT_SAMPLERATE_VAL   (12500U)
#define PROFILE_USRR_ADC_SAMPLE_VAL          (512U)
#define PROFILE_USRR_IDLE_TIME_VAL           (700U)
#define PROFILE_USRR_RAMP_END_TIME_VAL       (4400U)
#define PROFILE_USRR_START_FREQ_GHZ		  (77.01f)
#define PROFILE_USRR_START_FREQ_VAL          (CONV_FREQ_GHZ_TO_CODEWORD(PROFILE_USRR_START_FREQ_GHZ))
#define PROFILE_USRR_TXOUT_POWER_BACKOFF     (0U)
#define PROFILE_USRR_TXPHASESHIFTER_VAL      (0U)
#define PROFILE_USRR_FREQ_SLOPE_MHZ_PER_US   (56.25f)
#define PROFILE_USRR_FREQ_SLOPE_VAL          (CONV_SLOPE_MHZ_PER_US_TO_CODEWORD(PROFILE_USRR_FREQ_SLOPE_MHZ_PER_US))
#define PROFILE_USRR_TX_START_TIME_VAL       (100U)  // 1us
#define PROFILE_USRR_ADC_START_TIME_VAL      (300U)

#define CHIRP_USRR_0_PROFILE_ID                (1U)
#define CHIRP_USRR_0_START_INDEX               (128U + 0U)
#define CHIRP_USRR_0_END_INDEX                 (128U + 0U)
#define CHIRP_USRR_0_START_FREQ_VAL            (0U)
#define CHIRP_USRR_0_FREQ_SLOPE_VAL            (0U)
#define CHIRP_USRR_0_IDLE_TIME_VAL             (0U)
#define CHIRP_USRR_0_ADC_START_TIME_VAL        (0U)
#define CHIRP_USRR_0_TX_CHANNEL                (TX_CHANNEL_1_ENABLE)

#define CHIRP_USRR_1_PROFILE_ID                (1U)
#define CHIRP_USRR_1_START_INDEX               (128U + 1U)
#define CHIRP_USRR_1_END_INDEX                 (128U + 1U)
#define CHIRP_USRR_1_START_FREQ_VAL            (0U)
#define CHIRP_USRR_1_FREQ_SLOPE_VAL            (0U)
#define CHIRP_USRR_1_IDLE_TIME_VAL             (0U)
#define CHIRP_USRR_1_ADC_START_TIME_VAL        (0U)
#define CHIRP_USRR_1_TX_CHANNEL                (TX_CHANNEL_2_ENABLE)

/* SUBFRAME Configuration */
#define SUBFRAME_USRR_CHIRP_START_IDX           (CHIRP_USRR_0_START_INDEX)
#define SUBFRAME_USRR_CHIRP_END_IDX             (CHIRP_USRR_1_END_INDEX)
#define SUBFRAME_USRR_LOOP_COUNT                (32U)
#define SUBFRAME_USRR_PERIODICITY_VAL           (6000000U) // 30ms
#define SUBFRAME_USRR_TRIGGER_DELAY_VAL         (0U)
#define SUBFRAME_USRR_NUM_REAL_ADC_SAMPLES      (PROFILE_USRR_ADC_SAMPLE_VAL * 2)
#define SUBFRAME_USRR_NUM_CMPLX_ADC_SAMPLES     (PROFILE_USRR_ADC_SAMPLE_VAL)
#define SUBFRAME_USRR_CHIRPTYPE_0_NUM_CHIRPS    ((CHIRP_USRR_0_END_INDEX - CHIRP_USRR_0_START_INDEX + 1)*SUBFRAME_USRR_LOOP_COUNT)
#define SUBFRAME_USRR_CHIRPTYPE_1_NUM_CHIRPS    ((CHIRP_USRR_1_END_INDEX - CHIRP_USRR_1_START_INDEX + 1)*SUBFRAME_USRR_LOOP_COUNT)
#define SUBFRAME_USRR_NUM_TX					(2U)
#define SUBFRAME_USRR_NUM_VIRT_ANT				(SUBFRAME_USRR_NUM_TX*NUM_RX_CHANNELS)
#define SUBFRAME_USRR_NUM_ANGLE_BINS			(32U)
#define SUBFRAME_USRR_NUM_CHIRPS_TOTAL			((SUBFRAME_USRR_CHIRP_END_IDX - SUBFRAME_USRR_CHIRP_START_IDX + 1) * SUBFRAME_USRR_LOOP_COUNT)

/*! @brief Derived parameters. */
#define PROFILE_USRR_RANGE_RESOLUTION_METERS        ((MMWDEMO_SPEED_OF_LIGHT_IN_METERS_PER_USEC * PROFILE_USRR_DIGOUT_SAMPLERATE_VAL)/ (2000.0f * PROFILE_USRR_FREQ_SLOPE_MHZ_PER_US * SUBFRAME_USRR_NUM_CMPLX_ADC_SAMPLES))

#define SUBFRAME_USRR_CHIRPTYPE_0_CHIRP_REPETITION_PERIOD_US (((CHIRP_USRR_0_IDLE_TIME_VAL + PROFILE_USRR_IDLE_TIME_VAL + PROFILE_USRR_RAMP_END_TIME_VAL)/100.0f))
#define SUBFRAME_USRR_CHIRPTYPE_1_CHIRP_REPETITION_PERIOD_US (((CHIRP_USRR_1_IDLE_TIME_VAL + PROFILE_USRR_IDLE_TIME_VAL + PROFILE_USRR_RAMP_END_TIME_VAL)/100.0f))

#define SUBFRAME_USRR_CHIRPTYPE_0_VEL_RESOLUTION_M_P_S       (((1000.0f/(SUBFRAME_USRR_CHIRPTYPE_0_CHIRP_REPETITION_PERIOD_US + SUBFRAME_USRR_CHIRPTYPE_1_CHIRP_REPETITION_PERIOD_US))/SUBFRAME_USRR_CHIRPTYPE_0_NUM_CHIRPS)*(PROFILE_SRR_LAMBDA_MILLIMETER/2.0f))
#define SUBFRAME_USRR_CHIRPTYPE_0_MAX_VEL_M_P_S     (SUBFRAME_USRR_CHIRPTYPE_0_VEL_RESOLUTION_M_P_S*SUBFRAME_USRR_CHIRPTYPE_0_NUM_CHIRPS/2)

#define SUBFRAME_USRR_CHIRPTYPE_1_VEL_RESOLUTION_M_P_S       (((1000.0f/(SUBFRAME_USRR_CHIRPTYPE_0_CHIRP_REPETITION_PERIOD_US + SUBFRAME_USRR_CHIRPTYPE_1_CHIRP_REPETITION_PERIOD_US))/SUBFRAME_USRR_CHIRPTYPE_1_NUM_CHIRPS)*(PROFILE_SRR_LAMBDA_MILLIMETER/2.0f))
#define SUBFRAME_USRR_CHIRPTYPE_1_MAX_VEL_M_P_S     (SUBFRAME_USRR_CHIRPTYPE_1_VEL_RESOLUTION_M_P_S*SUBFRAME_USRR_CHIRPTYPE_1_NUM_CHIRPS/2)
#define SUBFRAME_USRR_MIN_SNR_dB (12.0f)

#define SUBFRAME_USRR_NUM_CHIRPTYPES (2U)