dissertation/where_fi/utils/antenna_order.py
Christos Falas b681f0b2c6
Improve antenna order detection
Remove a lot of the false positives that were occuring due to random
noise
2025-01-28 21:40:28 +00:00

69 lines
2.4 KiB
Python

import logging
from collections import deque
from typing import Any, Collection
from ..collection import ingest
from ..config import config
logger = logging.getLogger(__name__)
AntennaIdentifier = tuple[ingest.Host, int]
order: list[AntennaIdentifier] = []
prev_unplugged: set[AntennaIdentifier] = set()
long_antenna_average: dict[AntennaIdentifier, deque[int]] = {
(host, 0): deque(maxlen=10 * config.sample_rate) for host in config.receive_hosts
} | {(host, 1): deque(maxlen=10 * config.sample_rate) for host in config.receive_hosts}
short_antenna_average: dict[AntennaIdentifier, deque[int]] = {
(host, 0): deque(maxlen=config.sample_rate) for host in config.receive_hosts
} | {(host, 1): deque(maxlen=config.sample_rate) for host in config.receive_hosts}
RSSI_THRESHOLD = 8
def average(data: Collection[Any]) -> float:
return sum(data) / len(data)
def callback(antenna_data: dict[ingest.Host, ingest.CSI]) -> None:
global prev_unplugged
global antenna_average
global order
unplugged: set[tuple[ingest.Host, int]] = set()
logger.debug(
"Antenna RSSI: "
+ str(
{
host: (csi.header.rssi1, csi.header.rssi2)
for host, csi in antenna_data.items()
}
)
)
for host, csi in antenna_data.items():
long_antenna_average[(host, 0)].append(csi.header.rssi1)
long_antenna_average[(host, 1)].append(csi.header.rssi2)
short_antenna_average[(host, 0)].append(csi.header.rssi1)
short_antenna_average[(host, 1)].append(csi.header.rssi2)
for antenna in range(2):
if (
average(short_antenna_average[(host, antenna)])
> average(long_antenna_average[(host, antenna)]) + RSSI_THRESHOLD
):
unplugged.add((host, antenna))
if prev_unplugged != unplugged:
if len(prev_unplugged) > len(unplugged):
logger.info(f"Antenna plugged in: {prev_unplugged - unplugged}")
else:
logger.info(f"Antenna unplugged: {unplugged - prev_unplugged}")
diff = list(unplugged - prev_unplugged)
if len(diff) == 1 and diff[0] not in order:
host, antenna = diff.pop()
order.append((host, antenna))
logger.info(f"Current order: {order}")
prev_unplugged = unplugged
def main() -> None:
ingest.start_processing(pre_merge_callback=callback)