Fig. 1. Structural diagram of the main components of the remote sensor

Fig. 2. Quarterly variation curve of heat flux of the ultra-low orbit outside the inlet

Fig. 3. Curves of heat flux outside the inlet variation with attitude maneuver

Fig. 4. Thermal control design diagram

Fig. 5. (a) Schematic diagram of high-precision radiation temperature control and insulation structure at secondary mirror supported; (b) Schematic diagram of high-precision radiation temperature control structural with inside and outside dual radiative heat shield at front mirror tube

Fig. 6. Schematic diagram of regional power distribution high-precision temperature control

Fig. 7. Temperature curves of main optical lenses in thermal balance test

Fig. 8. Temperature curves of front mirror tube in thermal balance test

Fig. 9. Temperature curves of primary load bearing in thermal balance test

Fig. 10. (a) Temperature curves of primary mirror during in orbit flight; (b) Temperature curves of secondary mirror during in orbit flight; (c) Temperature curves of three mirror during in orbit flight; (d) Temperature curves of four mirror during in orbit flight; (e) Temperature curves of front mirror tube during in orbit flight; (f) Temperature curves of primary load bearing during in orbit flight; (g) Temperature curves of focal plane box during in orbit flight