BME280 improves GPS?

hi,

i have bme280 temperature/pressure/humidity sensor , on product page says can improve gps.

can explain how done?

this product page:
http://www.bosch-sensortec.com/de/homepage/products_3/environmental_sensors_1/bme280/bme280_1

the bme280 can gps position solution if used in conjunction kalman filter or similar.  reason can change in altitude measured baro pressure sensor on bme280 in general more accurate measured gps.  gps gives lousy altitude reading.

wade

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